Frieda grinned, pinching him on the butt.

弗里达咧嘴笑了，在他屁股上拧了一把。

《柯林斯英汉双解大词典》

Some racquets feature a trap door on the butt cap to allow easy removal of drill flash.

一些球拍有一个可以打开的手柄底盖，它可以容易的清除拍框内 侧残留的钻孔碎片。

youdao

He had some of it in his shed then. There were marks of an axe and of woodpeckers on the butt.

那时候，他家里还留着一点，在底部还有斧痕和啄木鸟啄过的痕迹。

youdao

First I go over the physical posture you should have because when you're sitting like we usually sit on the round cushion or the floor, re free of contact with people usually both your knees and your butt are for the kneeling.

首先理顺应有的身体姿势,因为打坐时,像我们常会坐在圆坐垫,或地板上，你要确定自己身旁不要有人，you，make，sure，you‘,通常两膝和臀部都要注意,都要碰到地面。

普林斯顿公开课 - 人性课程节选

Finally, a button on the butt of the shooter triggers the "hold your breath" action to steady an in-game weapon when pressed against your arm or shoulder.

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That means at some point not only will the economy be on its butt, but so will the stock and bond markets.

FORBES: Global Prosperity Hiding Behind Government Bureaucracy

Butt and Imran Nazir put on 45 for the first wicket before the latter was bowled by Dilhara Fernando for 17, while Butt then built another solid partnership with Hameed, the pair putting on 98 before Hameed was caught and bowled by Malinga Bandara for 50.

BBC: SPORT | Cricket | Pakistan complete series victory