Definition of Breechblock. Meaning of Breechblock. Synonyms of Breechblock
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Definition of Breechblock
Breechblock Breechblock Breech"block, n.
The movable piece which closes the breech of a breech-loading
firearm, and resists the backward force of the discharge. It
is withdrawn for the insertion of a cartridge, and closed
again before the gun is fired.