- a rod communicating the rectilinear motion of a piston to the small end of a connecting rod or elsewhere.
Origin of piston rod
First recorded in 1780–90
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018
Examples from the Web for piston rod
His gun had come to his shoulder like the piston-rod of an engine.The Double Four
E. Phillips Oppenheim
Close the extractor around the piston-rod and insert the locking-pin.The Gunner's Examiner
Harold E. Cloke
The main links connecting the piston-rod f with the end of the beam.The Boy's Playbook of Science
John Henry Pepper
But that's only when the man at the head keeps his finger on the piston-rod.Carnac's Folly, Complete
The motion of the piston-rod backwards and forwards turns such a winch.
- the rod that connects the piston of a reciprocating steam engine to the crosshead
- a less common name for a connecting rod