v. t. [ imp. & p. p. Unbreeched p. pr. & vb. n. Unbreeching. ] [ 1st pref. un- + breech. ] 1. To remove the breeches of; to divest or strip of breeches. Shak. [ 1913 Webster ]

2. (Gun.) To free the breech of, as a cannon, from its fastenings or coverings. Pennant. [ 1913 Webster ]