master-at-arms

noun

mas·​ter-at-arms ˈma-stər-at-ˈärmz How to pronounce master-at-arms (audio)
plural masters-at-arms
: a petty officer charged with maintaining discipline aboard ship

Examples of master-at-arms in a Sentence

Recent Examples on the Web
Examples are automatically compiled from online sources to show current usage. Read More Opinions expressed in the examples do not represent those of Merriam-Webster or its editors. Send us feedback.
Antonio Abel Alcantar, a U.S. Navy master-at-arms with 11 years of service, pleaded not guilty to one count of murder and one count of gross vehicular manslaughter while intoxicated during an arraignment hearing in San Diego Superior Court. Caleb Lunetta, San Diego Union-Tribune, 31 Oct. 2025

Word History

First Known Use

1732, in the meaning defined above

Time Traveler
The first known use of master-at-arms was in 1732

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Cite this Entry

“Master-at-arms.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/master-at-arms. Accessed 13 Jan. 2026.

Last Updated: - Updated example sentences
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