Un‐breech″ (?), 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.
2. (Gun.) To free the breech of, as a cannon, from its fastenings or coverings. Pennant.