rocker arm

noun

Definition of rocker arm 

: a center-pivoted lever actuated by a cam to push an automotive engine valve down

Examples of rocker arm in a Sentence

Recent Examples on the Web

Salvatore Vicari, the works council chief at Schaeffler’s Homburg plant, said over the din of clanking and whirring machines transforming metal bands into rocker arms that help combustion engines save fuel. Bloomberg.com, "The Town on the Front Lines of Germany’s Battle to Preserve its Industrial Future," 28 Mar. 2018 When deployed, the unit stretches 15.5 feet and uses rocker arms to tilt the spikes into the tire at the correct angle, ensuring maximum penetration. David Beard, Car and Driver, "Chase Enders: Police Spike Strips Tested!," 31 Aug. 2017

These example sentences are selected automatically from various online news sources to reflect current usage of the word 'rocker arm.' Views expressed in the examples do not represent the opinion of Merriam-Webster or its editors. Send us feedback.

First Known Use of rocker arm

1851, in the meaning defined above

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The first known use of rocker arm was in 1851

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