breech·block (br ch bl k )n. The metal part that closes the breech end of the barrel of a breechloading gun and that is removed to insert a cartridge and replaced before firing. |
breechblock [ˈbriːtʃˌblɒk]
n
(Military / Firearms, Gunnery, Ordnance & Artillery) a metal block in breech-loading firearms that is withdrawn to insert the cartridge and replaced to close the breech before firing
ThesaurusLegend: Synonyms Related Words Antonyms
| Noun | 1. |  breechblock - a metal block in breech-loading firearms that is withdrawn to insert a cartridge and replaced to close the breech before firingblockage, stoppage, occlusion, closure, block, stop - an obstruction in a pipe or tube; "we had to call a plumber to clear out the blockage in the drainpipe" breech, rear of barrel, rear of tube - opening in the rear of the barrel of a gun where bullets can be loaded |
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