1. 耦接头;联轴器;(连接车辆的)车钩
A coupling is a device which is used to join two vehicles or pieces of equipment together.

2. (两种不同的事物、想法或活动的)连接，结合;合作
When two different things, ideas, or activities are combined, or when two people work together, you can refer to this combination as a coupling .

3. 性交
An act of sexual intercourse is sometimes referred to as a coupling .

4. see also: couple

1. the act of pairing a male and female for reproductive purposes

e.g. the casual couplings of adolescents
the mating of some species occurs only in the spring

Synonym: matingpairingconjugationunionsexual union

2. a mechanical device that serves to connect the ends of adjacent objects

Synonym: coupler

3. a connection (like a clamp or vise) between two things so they move together

Synonym: yoke