unbreech

verb2

1. •
   To remove the breeches of.

   • Looking on the lines Of my boy's face, my thoughts I did recoil Twenty-three years; and saw myself unbreech'd — 1610
2. •
   To free the breech of (a cannon etc.) from its fastenings or coverings.

   • She was overladen with guns , some were unbreeched , and her port - holes left open — 1801