名詞 prat:

1. the fleshy part of the human body that you sit on
   同義詞：buttocks, nates, arse, butt, backside, bum, buns, can, fundament, hindquarters, hind end, keister, posterior, rear, rear end, rump, stern, seat, tail, tail end, tooshie, tush, bottom, behind, derriere, fanny, ass

prat

n.Slang （名詞）【俚語】
The buttocks.
屁股

來源：
[Origin unknown]
[語源不明]