buttock

名词

1. 1

   臀部、屁股常用复数；较正式

   He sat down too quickly and bruised his left buttock.

   他坐下时太急，左边臀部撞出了瘀青。

2. 2

   臀部、臀肉医学

   The nurse gave him the injection in the buttock.

   护理师在他的臀部打了那一针。