Wrist-pin
a pin joining the end of a connecting rod to a trunk piston or the end of a piston rod.
historical examples
aviation engines victor wilfred pag
steam engines anonymous
steam engines anonymous
noun
a cylindrical boss or pin attached to the side of a wheel parallel with the axis, esp one forming a bearing for a crank
(us & canadian) the pin through the skirt of a piston in an internal-combustion engine, to which the little end of the connecting rod is attached also called (esp in britain) gudgeon pin
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