fermeture

noun

fer·​me·​ture

ˈfərməˌchu̇(ə)r

plural -s

: the mechanism closing the breech of a breech-loading firearm

Word History

Etymology

French, literally, act of closing, apparatus for closing, from Middle French, from Medieval Latin firmatura lock, clasp, from Latin firmatus (past participle of firmare to make fast) + -ura -ure (verb)

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