coupling

1. N-COUNT A coupling is a device which is used to join two vehicles or pieces of equipment together. 轴承; 挂钩[oft supp N]

Before driving away, re-check the trailer coupling. 把车开走前，请再检查一下拖车的挂钩。

2. N-COUNT An act of sexual intercourse is sometimes referred to as a coupling. 性交[正式]

...sexual couplings. ...性交。

3. →see also couple