wrist pin

noun

Machinery.

1. a pin joining the end of a connecting rod to a trunk piston or the end of a piston rod.

wrist pin

noun

1. a cylindrical boss or pin attached to the side of a wheel parallel with the axis, esp one forming a bearing for a crank

2. Also called (esp in Britain): gudgeon pin. the pin through the skirt of a piston in an internal-combustion engine, to which the little end of the connecting rod is attached

Word History and Origins

Origin of wrist pin¹

First recorded in 1870–75