rocker arm

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noun Machinery.

a rocking or oscillating arm or lever rotating with a moving shaft or pivoted on a stationary shaft.

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His boss, whom he admires, is waiting to meet with him about the big project.

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Origin of rocker arm

First recorded in 1855–60

Words nearby rocker arm

Rockefeller, Rockefeller, John D., Rockefeller, Nelson, rock elm, rocker, rocker arm, rocker cam, rocker panel, rockery, rocket, rocket airplane

Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2023

How to use rocker arm in a sentence

At St. Barnabas Hospital, Pellerano was listed in stable condition with wounds to his chest and arm.
Shot Down During the NYPD Slowdown|Michael Daly|January 7, 2015|DAILY BEAST
The big slug happened to hit the suspect in the street, passing through his arm and then striking Police Officer Andrew Dossi.
Shot Down During the NYPD Slowdown|Michael Daly|January 7, 2015|DAILY BEAST
He plays an aging punk rocker and I play the drummer from his old band.
Coffee Talk with Fred Armisen: On ‘Portlandia,’ Meeting Obama, and Taylor Swift’s Greatness|Marlow Stern|January 7, 2015|DAILY BEAST
Dossi initially was listed in critical condition with wounds to his arm and lower back.
Shot Down During the NYPD Slowdown|Michael Daly|January 7, 2015|DAILY BEAST

She is wearing a crop top, and Andrew has his arm wrapped around her waist.
Buckingham Palace Disputes Sex Allegations Against Prince ‘Randy Andy’|Tom Sykes|January 4, 2015|DAILY BEAST
She was holding the back of her chair with one hand; her loose sleeve had slipped almost to the shoulder of her uplifted arm.
The Awakening and Selected Short Stories|Kate Chopin
In Spain he was regarded as the right arm of the ultra-clericals and a possible supporter of Carlism.
The Philippine Islands|John Foreman
Grandmamma sits in her quaint arm-chair— Never was lady more sweet and fair!
Boys and Girls Bookshelf; a Practical Plan of Character Building, Volume I (of 17)|Various
She looked up in his face, leaning on his arm beneath the encircling shadow of the umbrella which he had lifted.
The Awakening and Selected Short Stories|Kate Chopin
But the strength of his arm, and the bravery of his heart could not have defended him long against their determined attack.
The Pastor's Fire-side Vol. 3 of 4|Jane Porter

British Dictionary definitions for rocker arm

rocker arm

noun

a lever that rocks about a pivot, esp a lever in an internal-combustion engine that transmits the motion of a pushrod or cam to a valve

Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012