the lower part of the body behind; the buttocks.-breeches.-the hinder part of anything; esp., the part of a cannon, or other firearm, behind the chamber.-the external angle of knee timber, the inside of which is called the throat.-to put into, or clothe with, breeches.-to cover as with breeches.-to fit or furnish with a breech; as, to breech a gun.-to whip on the breech.-to fasten with breeching.