1. 臀部：三个拐点按照如下方式确定:胸部:胸部(bust)最大周长腰部:腹部(abdomen)最小周长髋部:髋部与臀部(buttocks)最大周长女性体形有四种组合结构(combinatorial structure).

2. buttocks

2. 屁股：二、联邦航空总署(Federal Aviation Administration)花了5万7,000美元,研究432位空姐的身材尺码,特别是屁股(buttocks)的大小,以确定她们在机上坐下时,膝盖是怎麼摆的.

3. 屁股蛋：Hips 臀 | Buttocks 屁股蛋 | Bone骨头

4. 船艄凸面 臀部：buttockmachine立槽割煤机 | buttocks船艄凸面 臀部 | butt-off补捣

1. the fleshy part of the human body that you sit on

    e.g. he deserves a good kick in the butt
           are you going to sit on your fanny and do nothing?

    Synonym: natesarsebuttbacksidebumbunscanfundamenthindquartershind endkeisterposteriorpratrearrear endrumpsternseattailtail endtooshietushbottombehindderrierefannyass