bristle

1. N-COUNT Bristles are the short hairs that grow on a man's face after he has shaved. The hairs on the top of a man's head can also be called bristles when they are cut very short. 胡子茬; (男子头顶处的) 短发

...two days' growth of bristles. …两天没剃长出的胡子茬儿。

2. N-COUNT The bristles of a brush are the thick hairs or hairlike pieces of plastic which are attached to it. (刷子的) 毛

As soon as the bristles on your toothbrush begin to wear, throw it out. 牙刷毛一旦磨损就扔掉。

3. N-COUNT Bristles are thick, strong animal hairs that feel hard and rough. 刚毛

It has a short stumpy tail covered with bristles. 它有一条又短又粗、长满了刚毛的尾巴。