Definition of Helmet shell. Meaning of Helmet shell. Synonyms of Helmet shell

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Definition of Helmet shell

Helmet shell
Helmet Hel"met, n. [OF. helmet, a dim of helme, F. heaume; of Teutonic origin; cf. G. helm, akin to AS. & OS. helm, D. helm, helmet, Icel. hj[=a]lmr, Sw. hjelm, Dan. hielm, Goth. hilms; and prob. from the root of AS. helan to hide, to hele; cf. also Lith. szalmas, Russ. shleme, Skr. [,c]arman protection. [root]17. Cf. Hele, Hell, Helm a helmet.] 1. (Armor) A defensive covering for the head. See Casque, Headpiece, Morion, Sallet, and Illust. of Beaver. 2. (Her.) The representation of a helmet over shields or coats of arms, denoting gradations of rank by modifications of form. 3. A helmet-shaped hat, made of cork, felt, metal, or other suitable material, worn as part of the uniform of soldiers, firemen, etc., also worn in hot countries as a protection from the heat of the sun. 4. That which resembles a helmet in form, position, etc.; as: (a) (Chem.) The upper part of a retort. --Boyle. (b) (Bot.) The hood-formed upper sepal or petal of some flowers, as of the monkshood or the snapdragon. (c) (Zo["o]l.) A naked shield or protuberance on the top or fore part of the head of a bird. Helmet beetle (Zo["o]l.), a leaf-eating beetle of the family Chrysomelid[ae], having a short, broad, and flattened body. Many species are known. Helmet shell (Zo["o]l.), one of many species of tropical marine univalve shells belonging to Cassis and allied genera. Many of them are large and handsome; several are used for cutting as cameos, and hence are called cameo shells. See King conch. Helmet shrike (Zo["o]l.), an African wood shrike of the genus Prionodon, having a large crest.

Meaning of Helmet shell from wikipedia

- helmet is a combat helmet that was used by the U.S. military from World War II until 1985, when it was succeeded by the PASGT helmet. The M1 helmet has...
- The Brodie helmet is a steel combat helmet designed and patented in London in 1915 by Latvian inventor John Leopold Brodie (Latvian: Leopolds Janno Braude)...
- The Ops-Core ****ure ****ault S**** Technology (FAST) Helmet, also known as the FAST helmet, is an American combat helmet used by special operations forces...
- The Stahlhelm ('steel helmet') is a German military steel combat helmet intended to provide protection against shrapnels and fragments or shards of grenades...
- The custodian helmet is a type of helmet worn predominantly by male police officers in the United Kingdom and within certain other places around the world...
- is required by law in many countries. Motorcycle helmets consist of a polystyrene foam inner s**** that absorbs the shock of an impact, and a protective...
- directly to the skull. Some helmet s**** have a mid-line reinforcement ridge to improve impact resistance. The rock climbing helmet fulfills a very similar...
- Advanced Combat Helmet (ACH) but is thicker; they can be differentiated from the ACH by the different chinstrap. The ECH helmet's s**** is made of an...
- needed] There are two main types of helmet: hard s**** and soft/micro s**** (no-s**** helmets are now rare). Hard s**** declined rapidly among the general...
- standard M1 helmet, the s**** of the M1C is practically identical to standard swivel bail infantry helmets, making a concrete identification of a helmet as an...