'Fermeture' definitions:

Definition of 'Fermeture'

From: GCIDE

Fermeture \Fer"me*ture\, n. [F., fr. fermer to close.] (Mil.) The mechanism for closing the breech of a breech-loading firearm, in artillery consisting principally of the breechblock, obturator, and carrier ring. [Webster 1913 Suppl.]