Definition of head. Meaning of head. Synonyms of head

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Definition of head

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Cabbage head
Cabbage Cab"bage (k[a^]b"b[asl]j), n. [OE. cabage, fr. F. cabus headed (of cabbages), chou cabus headed cabbage, cabbage head; cf. It. capuccio a little head, cappuccio cowl, hood, cabbage, fr. capo head, L. caput, or fr. It. cappa cape. See Chief, Cape.] (Bot.) 1. An esculent vegetable of many varieties, derived from the wild Brassica oleracea of Europe. The common cabbage has a compact head of leaves. The cauliflower, Brussels sprouts, etc., are sometimes classed as cabbages. 2. The terminal bud of certain palm trees, used, like, cabbage, for food. See Cabbage tree, below. 3. The cabbage palmetto. See below. Cabbage aphis (Zo["o]l.), a green plant-louse (Aphis brassic[ae]) which lives upon the leaves of the cabbage. Cabbage beetle (Zo["o]l.), a small, striped flea-beetle (Phyllotreta vittata) which lives, in the larval state, on the roots, and when adult, on the leaves, of cabbage and other cruciferous plants. Cabbage butterfly (Zo["o]l.), a white butterfly (Pieris rap[ae] of both Europe and America, and the allied P. oleracea, a native American species) which, in the larval state, devours the leaves of the cabbage and the turnip. See Cabbage worm, below. Cabbage fly (Zo["o]l.), a small two-winged fly (Anthomyia brassic[ae]), which feeds, in the larval or maggot state, on the roots of the cabbage, often doing much damage to the crop. Cabbage head, the compact head formed by the leaves of a cabbage; -- contemptuously or humorously, and colloquially, a very stupid and silly person; a numskull. Cabbage palmetto, a species of palm tree (Sabal Palmetto) found along the coast from North Carolina to Florida. Cabbage rose (Bot.), a species of rose (Rosa centifolia) having large and heavy blossoms. Cabbage tree, Cabbage palm, a name given to palms having a terminal bud called a cabbage, as the Sabal Palmetto of the United States, and the Euterpe oleracea and Oreodoxa oleracea of the West Indies. Cabbage worm (Zo["o]l.), the larva of several species of moths and butterflies, which attacks cabbages. The most common is usually the larva of a white butterfly. See Cabbage butterfly, above. The cabbage cutworms, which eat off the stalks of young plants during the night, are the larv[ae] of several species of moths, of the genus Agrotis. See Cutworm. Sea cabbage.(Bot.) (a) Sea kale (b) . The original Plant (Brassica oleracea), from which the cabbage, cauliflower, broccoli, etc., have been derived by cultivation. Thousand-headed cabbage. See Brussels sprouts.
Cutter head
Cutter Cut"ter (k?t"t?r), n. 1. One who cuts; as, a stone cutter; a die cutter; esp., one who cuts out garments. 2. That which cuts; a machine or part of a machine, or a tool or instrument used for cutting, as that part of a mower which severs the stalk, or as a paper cutter. 3. A fore tooth; an incisor. --Ray. 4. (Naut.) (a) A boat used by ships of war. (b) A fast sailing vessel with one mast, rigged in most essentials like a sloop. A cutter is narrower end deeper than a sloop of the same length, and depends for stability on a deep keel, often heavily weighted with lead. (c) A small armed vessel, usually a steamer, in the revenue marine service; -- also called revenue cutter. 5. A small, light one-horse sleigh. 6. An officer in the exchequer who notes by cutting on the tallies the sums paid. 7. A ruffian; a bravo; a destroyer. [Obs.] 8. A kind of soft yellow brick, used for facework; -- so called from the facility with which it can be cut. Cutter bar. (Mach.) (a) A bar which carries a cutter or cutting tool, as in a boring machine. (b) The bar to which the triangular knives of a harvester are attached. Cutter head (Mach.), a rotating head, which itself forms a cutter, or a rotating stock to which cutters may be attached, as in a planing or matching machine. --Knight.
Feed head
Feed Feed, n. 1. That which is eaten; esp., food for beasts; fodder; pasture; hay; grain, ground or whole; as, the best feed for sheep. 2. A grazing or pasture ground. --Shak. 3. An allowance of provender given to a horse, cow, etc.; a meal; as, a feed of corn or oats. 4. A meal, or the act of eating. [R.] For such pleasure till that hour At feed or fountain never had I found. --Milton. 5. The water supplied to steam boilers. 6. (Mach.) (a) The motion, or act, of carrying forward the stuff to be operated upon, as cloth to the needle in a sewing machine; or of producing progressive operation upon any material or object in a machine, as, in a turning lathe, by moving the cutting tool along or in the work. (b) The supply of material to a machine, as water to a steam boiler, coal to a furnace, or grain to a run of stones. (c) The mechanism by which the action of feeding is produced; a feed motion. Feed bag, a nose bag containing feed for a horse or mule. Feed cloth, an apron for leading cotton, wool, or other fiber, into a machine, as for carding, etc. Feed door, a door to a furnace, by which to supply coal. Feed head. (a) A cistern for feeding water by gravity to a steam boiler. (b) (Founding) An excess of metal above a mold, which serves to render the casting more compact by its pressure; -- also called a riser, deadhead, or simply feed or head --Knight. Feed heater. (a) (Steam Engine) A vessel in which the feed water for the boiler is heated, usually by exhaust steam. (b) A boiler or kettle in which is heated food for stock. Feed motion, or Feed gear (Mach.), the train of mechanism that gives motion to the part that directly produces the feed in a machine. Feed pipe, a pipe for supplying the boiler of a steam engine, etc., with water. Feed pump, a force pump for supplying water to a steam boiler, etc. Feed regulator, a device for graduating the operation of a feeder. --Knight. Feed screw, in lathes, a long screw employed to impart a regular motion to a tool rest or tool, or to the work. Feed water, water supplied to a steam boiler, etc. Feed wheel (Mach.), a kind of feeder. See Feeder, n., 8.
Flower head
Note: If we examine a common flower, such for instance as a geranium, we shall find that it consists of: First, an outer envelope or calyx, sometimes tubular, sometimes consisting of separate leaves called sepals; secondly, an inner envelope or corolla, which is generally more or less colored, and which, like the calyx, is sometimes tubular, sometimes composed of separate leaves called petals; thirdly, one or more stamens, consisting of a stalk or filament and a head or anther, in which the pollen is produced; and fourthly, a pistil, which is situated in the center of the flower, and consists generally of three principal parts; one or more compartments at the base, each containing one or more seeds; the stalk or style; and the stigma, which in many familiar instances forms a small head, at the top of the style or ovary, and to which the pollen must find its way in order to fertilize the flower. --Sir J. Lubbock. 3. The fairest, freshest, and choicest part of anything; as, the flower of an army, or of a family; the state or time of freshness and bloom; as, the flower of life, that is, youth. The choice and flower of all things profitable the Psalms do more briefly contain. --Hooker. The flower of the chivalry of all Spain. --Southey. A simple maiden in her flower Is worth a hundred coats of arms. --Tennyson. 4. Grain pulverized; meal; flour. [Obs.] The flowers of grains, mixed with water, will make a sort of glue. --Arbuthnot. 5. pl. (Old. Chem.) A substance in the form of a powder, especially when condensed from sublimation; as, the flowers of sulphur. 6. A figure of speech; an ornament of style. 7. pl. (Print.) Ornamental type used chiefly for borders around pages, cards, etc. --W. Savage. 8. pl. Menstrual discharges. --Lev. xv. 24. Animal flower (Zo["o]l.) See under Animal. Cut flowers, flowers cut from the stalk, as for making a bouquet. Flower bed, a plat in a garden for the cultivation of flowers. Flower beetle (Zo["o]l.), any beetle which feeds upon flowers, esp. any one of numerous small species of the genus Meligethes, family Nitidulid[ae], some of which are injurious to crops. Flower bird (Zo["o]l.), an Australian bird of the genus Anthornis, allied to the honey eaters. Flower bud, an unopened flower. Flower clock, an assemblage of flowers which open and close at different hours of the day, thus indicating the time. Flower head (Bot.), a compound flower in which all the florets are sessile on their receptacle, as in the case of the daisy. Flower pecker (Zo["o]l.), one of a family (Dic[ae]id[ae]) of small Indian and Australian birds. They resemble humming birds in habits. Flower piece. (a) A table ornament made of cut flowers. (b) (Fine Arts) A picture of flowers. Flower stalk (Bot.), the peduncle of a plant, or the stem that supports the flower or fructification.
Gill head
Gill Gill, n. [Dan. gi[ae]lle, gelle; akin to Sw. g["a]l, Icel. gj["o]lnar gills; cf. AS. geagl, geahl, jaw.] 1. (Anat.) An organ for aquatic respiration; a branchia. Fishes perform respiration under water by the gills. --Ray. Note: Gills are usually lamellar or filamentous appendages, through which the blood circulates, and in which it is exposed to the action of the air contained in the water. In vertebrates they are appendages of the visceral arches on either side of the neck. In invertebrates they occupy various situations. 2. pl. (Bot.) The radiating, gill-shaped plates forming the under surface of a mushroom. 3. (Zo["o]l.) The fleshy flap that hangs below the beak of a fowl; a wattle. 4. The flesh under or about the chin. --Swift. 5. (Spinning) One of the combs of closely ranged steel pins which divide the ribbons of flax fiber or wool into fewer parallel filaments. [Prob. so called from F. aiguilles, needles. --Ure.] Gill arches, Gill bars. (Anat.) Same as Branchial arches. Gill clefts. (Anat.) Same as Branchial clefts. See under Branchial. Gill cover, Gill lid. See Operculum. Gill frame, or Gill head (Flax Manuf.), a spreader; a machine for subjecting flax to the action of gills. --Knight. Gill net, a flat net so suspended in the water that its meshes allow the heads of fish to pass, but catch in the gills when they seek to extricate themselves. Gill opening, or Gill slit (Anat.), an opening behind and below the head of most fishes, and some amphibians, by which the water from the gills is discharged. In most fishes there is a single opening on each side, but in the sharks and rays there are five, or more, on each side. Gill rakes, or Gill rakers (Anat.), horny filaments, or progresses, on the inside of the branchial arches of fishes, which help to prevent solid substances from being carried into gill cavities.
Great headed widgeon
Widgeon Widg"eon, n. [Probably from an old French form of F. vigeon, vingeon, gingeon; of uncertain origin; cf. L. vipio, -onis, a kind of small crane.] (Zo["o]l.) Any one of several species of fresh-water ducks, especially those belonging to the subgenus Mareca, of the genus Anas. The common European widgeon (Anas penelope) and the American widgeon (A. Americana) are the most important species. The latter is called also baldhead, baldpate, baldface, baldcrown, smoking duck, wheat, duck, and whitebelly. Bald-faced, or Green-headed, widgeon, the American widgeon. Black widgeon, the European tufted duck. Gray widgeon. (a) The gadwall. (b) The pintail duck. Great headed widgeon, the poachard. Pied widgeon. (a) The poachard. (b) The goosander. Saw-billed widgeon, the merganser. Sea widgeon. See in the Vocabulary. Spear widgeon, the goosander. [Prov. Eng.] Spoonbilled widgeon, the shoveler. White widgeon, the smew. Wood widgeon, the wood duck.
kevel head
Timberhead Tim"ber*head`, n. (Naut.) The top end of a timber, rising above the gunwale, and serving for belaying ropes, etc.; -- called also kevel head.
Micrometer head
Micrometer Mi*crom"e*ter, n. [Micro- + -meter: cf. F. microm[`e]tre.] An instrument, used with a telescope or microscope, for measuring minute distances, or the apparent diameters of objects which subtend minute angles. The measurement given directly is that of the image of the object formed at the focus of the object glass. Circular, or Ring, micrometer, a metallic ring fixed in the focus of the object glass of a telescope, and used to determine differences of right ascension and declination between stars by observations of the times at which the stars cross the inner or outer periphery of the ring. Double image micrometer, a micrometer in which two images of an object are formed in the field, usually by the two halves of a bisected lens which are movable along their line of section by a screw, and distances are determined by the number of screw revolutions necessary to bring the points to be measured into optical coincidence. When the two images are formed by a bisected object glass, it is called a divided-object-glass micrometer, and when the instrument is large and equatorially mounted, it is known as a heliometer. Double refraction micrometer, a species of double image micrometer, in which the two images are formed by the double refraction of rock crystal. Filar, or Bifilar, micrometer. See under Bifilar. Micrometer caliper or gauge (Mech.), a caliper or gauge with a micrometer screw, for measuring dimensions with great accuracy. Micrometer head, the head of a micrometer screw. Micrometer microscope, a compound microscope combined with a filar micrometer, used chiefly for reading and subdividing the divisions of large astronomical and geodetical instruments. Micrometer screw, a screw with a graduated head used in some forms of micrometers. Position micrometer. See under Position. Scale, or Linear, micrometer, a minute and very delicately graduated scale of equal parts used in the field of a telescope or microscope, for measuring distances by direct comparison.
Mill head
Mill Mill, n. [OE. mille, melle, mulle, milne, AS. myln, mylen; akin to D. molen, G. m["u]hle, OHG. mul[=i], mul[=i]n, Icel. mylna; all prob. from L. molina, fr. mola millstone; prop., that which grinds, akin to molere to grind, Goth. malan, G. mahlen, and to E. meal. [root]108. See Meal flour, and cf. Moline.] 1. A machine for grinding or comminuting any substance, as grain, by rubbing and crushing it between two hard, rough, or intented surfaces; as, a gristmill, a coffee mill; a bone mill. 2. A machine used for expelling the juice, sap, etc., from vegetable tissues by pressure, or by pressure in combination with a grinding, or cutting process; as, a cider mill; a cane mill. 3. A machine for grinding and polishing; as, a lapidary mill. 4. A common name for various machines which produce a manufactured product, or change the form of a raw material by the continuous repetition of some simple action; as, a sawmill; a stamping mill, etc. 5. A building or collection of buildings with machinery by which the processes of manufacturing are carried on; as, a cotton mill; a powder mill; a rolling mill. 6. (Die Sinking) A hardened steel roller having a design in relief, used for imprinting a reversed copy of the design in a softer metal, as copper. 7. (Mining) (a) An excavation in rock, transverse to the workings, from which material for filling is obtained. (b) A passage underground through which ore is shot. 8. A milling cutter. See Illust. under Milling. 9. A pugilistic. [Cant] --R. D. Blackmore. Edge mill, Flint mill, etc. See under Edge, Flint, etc. Mill bar (Iron Works), a rough bar rolled or drawn directly from a bloom or puddle bar for conversion into merchant iron in the mill. Mill cinder, slag from a puddling furnace. Mill head, the head of water employed to turn the wheel of a mill. Mill pick, a pick for dressing millstones. Mill pond, a pond that supplies the water for a mill. Mill race, the canal in which water is conveyed to a mill wheel, or the current of water which drives the wheel. Mill tail, the water which flows from a mill wheel after turning it, or the channel in which the water flows. Mill tooth, a grinder or molar tooth. Mill wheel, the water wheel that drives the machinery of a mill. Roller mill, a mill in which flour or meal is made by crushing grain between rollers. Stamp mill (Mining), a mill in which ore is crushed by stamps. To go through the mill, to experience the suffering or discipline necessary to bring one to a certain degree of knowledge or skill, or to a certain mental state.
Mop head
Mop Mop, n. [CF. W. mop, mopa, Ir. moipal, Gael. moibeal, moibean; or OF. mappe a napkin (see Map, Napkin).] 1. An implement for washing floors, or the like, made of a piece of cloth, or a collection of thrums, or coarse yarn, fastened to a handle. 2. A fair where servants are hired. [Prov. Eng.] 3. The young of any animal; also, a young girl; a moppet. [Prov. Eng.] --Halliwell. Mop head. (a) The end of a mop, to which the thrums or rags are fastened. (b) A clamp for holding the thrums or rags of a mop. [U.S.]
Negro head
Negro Ne"gro, a. Of or pertaining to negroes; black. Negro bug (Zo["o]l.), a minute black bug common on the raspberry and blackberry. It produced a very disagreeable flavor. negro corn, the Indian millet or durra; -- so called in the West Indies. see Durra. --McElrath. Negro fly (Zo["o]l.), a black dipterous fly (Psila ros[ae]) which, in the larval state, is injurious to carrots; -- called also carrot fly. Negro head (Com.), Cavendish tobacco. [Cant] --McElrath. Negro monkey (Zo["o]l.), the moor monkey.
on the head
Knock Knock (n[o^]k), v. t. 1. To strike with something hard or heavy; to move by striking; to drive (a thing) against something; as, to knock a ball with a bat; to knock the head against a post; to knock a lamp off the table. When heroes knock their knotty heads together. --Rowe. 2. To strike for admittance; to rap upon, as a door. Master, knock the door hard. --Shak. To knock down. (a) To strike down; to fell; to prostrate by a blow or by blows; as, to knock down an assailant. (b) To assign to a bidder at an auction, by a blow or knock; to knock off. To knock in the head, or on the head, to stun or kill by a blow upon the head; hence, to put am end to; to defeat, as a scheme or project; to frustrate; to quash. [Colloq.] -- To knock off. (a) To force off by a blow or by beating. (b) To assign to a bidder at an auction, by a blow on the counter. (c) To leave off (work, etc.). [Colloq.] -- To knock out, to force out by a blow or by blows; as, to knock out the brains. To knock up. (a) To arouse by knocking. (b) To beat or tire out; to fatigue till unable to do more; as, the men were entirely knocked up. [Colloq.] ``The day being exceedingly hot, the want of food had knocked up my followers.' --Petherick. (c) (Bookbinding) To make even at the edges, or to shape into book form, as printed sheets.
Piston head
Piston Pis"ton, n. [F. piston; cf. It. pistone piston, also pestone a large pestle; all fr. L. pinsere, pistum, to pound, to stamp. See Pestle, Pistil.] (Mach.) A sliding piece which either is moved by, or moves against, fluid pressure. It usually consists of a short cylinder fitting within a cylindrical vessel along which it moves, back and forth. It is used in steam engines to receive motion from the steam, and in pumps to transmit motion to a fluid; also for other purposes. Piston head (Steam Eng.), that part of a piston which is made fast to the piston rod. Piston rod, a rod by which a piston is moved, or by which it communicates motion. Piston valve (Steam Eng.), a slide valve, consisting of a piston, or connected pistons, working in a cylindrical case which is provided with ports that are traversed by the valve.
Pit head
Pit Pit, n. [OE. pit, put, AS. pytt a pit, hole, L. puteus a well, pit.] 1. A large cavity or hole in the ground, either natural or artificial; a cavity in the surface of a body; an indentation; specifically: (a) The shaft of a coal mine; a coal pit. (b) A large hole in the ground from which material is dug or quarried; as, a stone pit; a gravel pit; or in which material is made by burning; as, a lime pit; a charcoal pit. (c) A vat sunk in the ground; as, a tan pit. Tumble me into some loathsome pit. --Shak. 2. Any abyss; especially, the grave, or hades. Back to the infernal pit I drag thee chained. --Milton. He keepth back his soul from the pit. --Job xxxiii. 18. 3. A covered deep hole for entrapping wild beasts; a pitfall; hence, a trap; a snare. Also used figuratively. The anointed of the Lord was taken in their pits. --Lam. iv. 20. 4. A depression or hollow in the surface of the human body; as: (a) The hollow place under the shoulder or arm; the axilla, or armpit. (b) See Pit of the stomach (below). (c) The indentation or mark left by a pustule, as in smallpox. 5. Formerly, that part of a theater, on the floor of the house, below the level of the stage and behind the orchestra; now, in England, commonly the part behind the stalls; in the United States, the parquet; also, the occupants of such a part of a theater. 6. An inclosed area into which gamecocks, dogs, and other animals are brought to fight, or where dogs are trained to kill rats. ``As fiercely as two gamecocks in the pit.' --Locke. 7. [Cf. D. pit, akin to E. pith.] (Bot.) (a) The endocarp of a drupe, and its contained seed or seeds; a stone; as, a peach pit; a cherry pit, etc. (b) A depression or thin spot in the wall of a duct. Cold pit (Hort.), an excavation in the earth, lined with masonry or boards, and covered with glass, but not artificially heated, -- used in winter for the storing and protection of half-hardly plants, and sometimes in the spring as a forcing bed. Pit coal, coal dug from the earth; mineral coal. Pit frame, the framework over the shaft of a coal mine. Pit head, the surface of the ground at the mouth of a pit or mine. Pit kiln, an oven for coking coal. Pit martin (Zo["o]l.), the bank swallow. [Prov. Eng.] Pit of the stomach (Anat.), the depression on the middle line of the epigastric region of the abdomen at the lower end of the sternum; the infrasternal depression. Pit saw (Mech.), a saw worked by two men, one of whom stands on the log and the other beneath it. The place of the latter is often in a pit, whence the name. Pit viper (Zo["o]l.), any viperine snake having a deep pit on each side of the snout. The rattlesnake and copperhead are examples. Working pit (Min.), a shaft in which the ore is hoisted and the workmen carried; -- in distinction from a shaft used for the pumps.
Poppet head
Poppet Pop"pet, n. 1. See Puppet. 2. (Naut.) One of certain upright timbers on the bilge ways, used to support a vessel in launching. --Totten. 3. (Mach.) An upright support or guide fastened at the bottom only. Poppet head, Puppet head. See Headstock (a) .
poppet head
Headstock Head"stock`, n. (Mach.) A part (usually separate from the bed or frame) for supporting some of the principal working parts of a machine; as: (a) The part of a lathe that holds the revolving spindle and its attachments; -- also called poppet head, the opposite corresponding part being called a tailstock. (b) The part of a planing machine that supports the cutter, etc.
Puppet head
Poppet Pop"pet, n. 1. See Puppet. 2. (Naut.) One of certain upright timbers on the bilge ways, used to support a vessel in launching. --Totten. 3. (Mach.) An upright support or guide fastened at the bottom only. Poppet head, Puppet head. See Headstock (a) .
Scald head
Scald Scald, a. [For scalled. See Scall.] 1. Affected with the scab; scabby. --Shak. 2. Scurvy; paltry; as, scald rhymers. [Obs.] --Shak. Scald crow (Zo["o]l.), the hooded crow. [Ireland] Scald head (Med.), a name popularly given to several diseases of the scalp characterized by pustules (the dried discharge of which forms scales) and by falling out of the hair.
Scalled head
Scalled Scalled, a. Scabby; scurfy; scall. [Obs.] ``With scalled brows black.' --Chaucer. Scalled head. (Med.) See Scald head, under Scald, a.
Shrinking head
Shrinking Shrink"ing, a. & n. from Shrink. Shrinking head (Founding), a body of molten metal connected with a mold for the purpose of supplying metal to compensate for the shrinkage of the casting; -- called also sinking head, and riser.
sinking head
Shrinking Shrink"ing, a. & n. from Shrink. Shrinking head (Founding), a body of molten metal connected with a mold for the purpose of supplying metal to compensate for the shrinkage of the casting; -- called also sinking head, and riser.
Sinking head
Sinking Sink"ing, a. & n. from Sink. Sinking fund. See under Fund. Sinking head (Founding), a riser from which the mold is fed as the casting shrinks. See Riser, n., 4. Sinking pump, a pump which can be lowered in a well or a mine shaft as the level of the water sinks.
Strap head
Strap Strap, n. [OE. strope, AS. stropp, L. stroppus, struppus, perhaps fr. Gr. ? a band or cord, fr. ? to twist, to turn (cf. Strophe). Cf. Strop a strap, a piece of rope.] 1. A long, narrow, pliable strip of leather, cloth, or the like; specifically, a strip of thick leather used in flogging. A lively cobbler that . . . had scarce passed a day without giving her [his wife] the discipline of the strap. --Addison. 2. Something made of such a strip, or of a part of one, or a combination of two or more for a particular use; as, a boot strap, shawl strap, stirrup strap. 3. A piece of leather, or strip of wood covered with a suitable material, for sharpening a razor; a strop. 4. A narrow strip of anything, as of iron or brass. Specifically: (a) (Carp. & Mach.) A band, plate, or loop of metal for clasping and holding timbers or parts of a machine. (b) (Naut.) A piece of rope or metal passing around a block and used for fastening it to anything. 5. (Bot.) (a) The flat part of the corolla in ligulate florets, as those of the white circle in the daisy. (b) The leaf, exclusive of its sheath, in some grasses. 6. A shoulder strap. See under Shoulder. Strap bolt, a bolt of which one end is a flat bar of considerable length. Strap head (Mach.), a journal box, or pair of brasses, secured to the end of a connecting rod by a strap. See Illust. of Gib and key, under Gib. Strap hinge, a hinge with long flaps by which it is fastened, as to a door or wall. Strap rail (Railroads), a flat rail formerly used.
To have a long head
2. Drawn out or extended in time; continued through a considerable tine, or to a great length; as, a long series of events; a long debate; a long drama; a long history; a long book. 3. Slow in passing; causing weariness by length or duration; lingering; as, long hours of watching. 4. Occurring or coming after an extended interval; distant in time; far away. The we may us reserve both fresh and strong Against the tournament, which is not long. --Spenser. 5. Extended to any specified measure; of a specified length; as, a span long; a yard long; a mile long, that is, extended to the measure of a mile, etc. 6. Far-reaching; extensive. `` Long views.' --Burke. 7. (Phonetics) Prolonged, or relatively more prolonged, in utterance; -- said of vowels and syllables. See Short, a., 13, and Guide to Pronunciation, [sect][sect] 22, 30. Note: Long is used as a prefix in a large number of compound adjectives which are mostly of obvious meaning; as, long-armed, long-beaked, long-haired, long-horned, long-necked, long-sleeved, long-tailed, long- worded, etc. In the long run, in the whole course of things taken together; in the ultimate result; eventually. Long clam (Zo["o]l.), the common clam (Mya arenaria) of the Northern United States and Canada; -- called also soft-shell clam and long-neck clam. See Mya. Long cloth, a kind of cotton cloth of superior quality. Long clothes, clothes worn by a young infant, extending below the feet. Long division. (Math.) See Division. Long dozen, one more than a dozen; thirteen. Long home, the grave. Long measure, Long mater. See under Measure, Meter. Long Parliament (Eng. Hist.), the Parliament which assembled Nov. 3, 1640, and was dissolved by Cromwell, April 20, 1653. Long price, the full retail price. Long purple (Bot.), a plant with purple flowers, supposed to be the Orchis mascula. --Dr. Prior. Long suit (Whist), a suit of which one holds originally more than three cards. --R. A. Proctor. Long tom. (a) A pivot gun of great length and range, on the dock of a vessel. (b) A long trough for washing auriferous earth. [Western U.S.] (c) (Zo["o]l.) The long-tailed titmouse. Long wall (Coal Mining), a working in which the whole seam is removed and the roof allowed to fall in, as the work progresses, except where passages are needed. Of long, a long time. [Obs.] --Fairfax. To be, or go, long of the market, To be on the long side of the market, etc. (Stock Exchange), to hold stock for a rise in price, or to have a contract under which one can demand stock on or before a certain day at a stipulated price; -- opposed to short in such phrases as, to be short of stock, to sell short, etc. [Cant] See Short. To have a long head, to have a farseeing or sagacious mind.
To hit the nail on the head
4. A measure of length, being two inches and a quarter, or the sixteenth of a yard. Nail ball (Ordnance), a round projectile with an iron bolt protruding to prevent it from turning in the gun. Nail plate, iron in plates from which cut nails are made. On the nail, in hand; on the spot; immediately; without delay or time of credit; as, to pay money on the nail. ``You shall have ten thousand pounds on the nail.' --Beaconsfield. To hit the nail on the head, to hit most effectively; to do or say a thing in the right way.
To knock in the head
Knock Knock (n[o^]k), v. t. 1. To strike with something hard or heavy; to move by striking; to drive (a thing) against something; as, to knock a ball with a bat; to knock the head against a post; to knock a lamp off the table. When heroes knock their knotty heads together. --Rowe. 2. To strike for admittance; to rap upon, as a door. Master, knock the door hard. --Shak. To knock down. (a) To strike down; to fell; to prostrate by a blow or by blows; as, to knock down an assailant. (b) To assign to a bidder at an auction, by a blow or knock; to knock off. To knock in the head, or on the head, to stun or kill by a blow upon the head; hence, to put am end to; to defeat, as a scheme or project; to frustrate; to quash. [Colloq.] -- To knock off. (a) To force off by a blow or by beating. (b) To assign to a bidder at an auction, by a blow on the counter. (c) To leave off (work, etc.). [Colloq.] -- To knock out, to force out by a blow or by blows; as, to knock out the brains. To knock up. (a) To arouse by knocking. (b) To beat or tire out; to fatigue till unable to do more; as, the men were entirely knocked up. [Colloq.] ``The day being exceedingly hot, the want of food had knocked up my followers.' --Petherick. (c) (Bookbinding) To make even at the edges, or to shape into book form, as printed sheets.
Torsion head
Torsion head Torsion head That part of a torsion balance from which the wire or filament is suspended.
Tunnel head
Tunnel Tun"nel, n. . [F. tonnelle a semicircular, wagon-headed vault, a tunnel net, an arbor, OF. also tonnel; dim. of tonne a tun; -- so named from its resemblance to a tun in shape. See Ton.] 1. A vessel with a broad mouth at one end, a pipe or tube at the other, for conveying liquor, fluids, etc., into casks, bottles, or other vessels; a funnel. 2. The opening of a chimney for the passage of smoke; a flue; a funnel. And one great chimney, whose long tunnel thence The smoke forth threw. --Spenser. 3. An artificial passage or archway for conducting canals or railroads under elevated ground, for the formation of roads under rivers or canals, and the construction of sewers, drains, and the like. 4. (Mining) A level passage driven across the measures, or at right angles to veins which it is desired to reach; -- distinguished from the drift, or gangway, which is led along the vein when reached by the tunnel. Tunnel head (Metal.), the top of a smelting furnace where the materials are put in. Tunnel kiln, a limekiln in which coal is burned, as distinguished from a flame kiln, in which wood or peat is used. Tunnel net, a net with a wide mouth at one end and narrow at the other. Tunnel pit, Tunnel shaft, a pit or shaft sunk from the top of the ground to the level of a tunnel, for drawing up the earth and stones, for ventilation, lighting, and the like.
Turret head
Turret Tur"ret, n. [OE. touret, OF. tourette, dim. of tour a tower, L. turris. See Tower.] 1. (Arch.) A little tower, frequently a merely ornamental structure at one of the angles of a larger structure. 2. (Anc. Mil.) A movable building, of a square form, consisting of ten or even twenty stories and sometimes one hundred and twenty cubits high, usually moved on wheels, and employed in approaching a fortified place, for carrying soldiers, engines, ladders, casting bridges, and other necessaries. 3. (Mil.) A revolving tower constructed of thick iron plates, within which cannon are mounted. Turrets are used on vessels of war and on land. 4. (Railroads) The elevated central portion of the roof of a passenger car. Its sides are pierced for light and ventilation. Turret clock, a large clock adapted for an elevated position, as in the tower of a church. Turret head (Mach.), a vertical cylindrical revolving tool holder for bringing different tools into action successively in a machine, as in a lathe. Turret lathe, a turning lathe having a turret head. Turret ship, an ironclad war vessel, with low sides, on which heavy guns are mounted within one or more iron turrets, which may be rotated, so that the guns may be made to bear in any required direction.
Winning headway
Winning Win"ning, n. 1. The act of obtaining something, as in a contest or by competition. 2. The money, etc., gained by success in competition or contest, esp, in gambling; -- usually in the plural. Ye seek land and sea for your winnings. --Chaucer. 3. (Mining) (a) A new opening. (b) The portion of a coal field out for working. Winning headway (Mining), an excavation for exploration, in post-and-stall working. Winning post, the post, or goal, at the end of a race.

Meaning of head from wikipedia

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