trun·​nion | \ ˈtrən-yən How to pronounce trunnion (audio) \

Definition of trunnion

: a pin or pivot on which something can be rotated or tilted especially : either of two opposite gudgeons on which a cannon is swiveled

Examples of trunnion in a Sentence

Recent Examples on the Web The $13 million project will replace the trunnion on the north span. oregonlive, "Bi-state committee tasked with reviving Interstate Bridge project meets next Friday," 18 Oct. 2019

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

First Known Use of trunnion

circa 1625, in the meaning defined above

History and Etymology for trunnion

French trognon core, stump

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The first known use of trunnion was circa 1625

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Cite this Entry

“Trunnion.” Dictionary, Merriam-Webster, Accessed 2 Jun. 2020.

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