noun · a mechanical device such as a clip, clamp, or tongs used to hold or fasten objects

请用夹子把晾在绳子上的衣服夹紧。

noun · a folding cover or holder used for storing or organizing loose documents

他把所有的会议记录都放进了一个蓝色夹子里。

noun · a small, flat case used for carrying paper money, credit cards, or photos

付账时，他发现自己把夹子落在家里了。