connecting rod

noun

, Machinery.

1. a rod or link for transmitting motion and force between a rotating and a reciprocating part, as between a piston and a crankshaft.

connecting rod

noun

1. a rod or bar for transmitting motion, esp one that connects a rotating part to a reciprocating part
2. such a rod that connects the piston to the crankshaft in an internal-combustion engine or reciprocating pump See also big end little end
3. a similar rod that connects the crosshead of a steam engine to the crank

Word History and Origins

Origin of connecting rod¹

First recorded in 1830–40