Source: The Collaborative International Dictionary of English v.0.48
hindquarters \hindquarters\ n.
1. the fleshy part of the human body at the back of the hip,
on which a person sits; teh buttocks.
Syn: buttocks, arse, butt, backside, bum, buns, can,
fundament, hind end, keister, posterior, prat, rear,
rear end, rump, stern, seat, tail, tail end, tooshie,
tush, bottom, behind, derriere, fanny, ass.
[WordNet 1.5]
2. the part of a quadruped that corresponds to the human
buttocks.
Syn: croup, croupe, rump.
[WordNet 1.5]