Dé`cu`lasse`ment" (?), n. [F.] Also, sometimes, Anglicized Dec`u*lass"ment (&?;). (Ordnance)

An accidental blowing off of, or other serious damage to, the breechblock of a gun; also, a removal of the breechblock for the purpose of disabling the gun.

 

© Webster 1913

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