breech

1 the part of the body upon which someone sits plant yourselves on your breeches on that bench and listen to what I have to say Synonyms backside, behind, booty (also bootie) [slang], bottom, buttocks, bum, buns, butt, caboose, can, cheeks, derriere (or derrière), duff, fanny, fundament, hams, haunches, heinie [slang], hunkers, keister (also keester) [slang], nates, posterior, rear, rear end, rump, seat, tail, tail end, tush [slang]Related Words beam, stern; moon [slang]

2 breeches pl  an outer garment covering each leg separately from waist to ankle the mounted riders look striking in their red coats and white breeches Synonyms breeches, britches, pantaloons, slacks, trousersRelated Words baggies, bell-bottoms, blue jeans, cargo pants, cords, corduroys, denims, jeans; hose, legging (or leggin), sweatpants; pants suit, pantsuit; bloomers, knee breeches, knickerbockers