coupling pin (English, noun)
expansion: coupling pin (plural coupling pins)
Senses:
glosses: Any pin used to form a connection between two mechanical or structural components.
A pin used to connect train cars or a trailer to a towing vehicle.
glosses: Any pin used to form a connection between two mechanical or structural components.
A pin for joining scaffolding frames or pipes.
Forms:
form: coupling pins
tags: plural