breech
breech \'bre-ch; "breeches" (garment) is usu 'brich-*z\ n [ME, breeches, fr. OE bre-c, pl. of bro-c leg covering; akin]to OHG bruoh breeches, OE brecan to break pl 1a: short trousers covering the hips and thighs and fitting snugly at the l ower edges at or just below the knee 1b: PANTS 2: BUTTOCKS 3a: the part of a firearm at the rear of the bore 3b: the bottom of a pulley block