nip in

1. 插队; 从旁边闪入

He had to stop when another car nipped in before him.

当另一辆车子超到他前面时, 他只好停车。

2. 改窄; 使变窄

She asked her mother to nip the dress in at the waist.

她让母亲把那连衣裙的腰部收窄一点。