详细解释:n. 屁股
英语解释：
名词 arse:
the fleshy part of the human body that you sit on同义词：buttocks, nates, butt, backside, bum, buns, can, fundament, hindquarters, hind end, keister, posterior, prat, rear, rear end, rump, stern, seat, tail, tail end, tooshie, tush, bottom, behind, derriere, fanny, ass