couplinglink

noun
UK /ˈkʌplɪŋ lɪŋk/
US /ˈkʌplɪŋ lɪŋk/

A coupling link is a small metal ring that joins two things together.

The worker used a coupling link to connect the two chains.


OTHER MEANINGS

2. A part in a machine that connects two moving pieces.

The mechanic replaced the coupling link between the shafts.

3. A link that holds train cars together.

The coupling link between the train cars was checked for safety.

4. A ring used to attach a dog's leash to its collar.

She clipped the coupling link onto the collar before the walk.