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captain's mast

American

noun

a session at which the captain of a naval ship hears and acts on the cases of enlisted personnel charged with committing offenses.

Etymology

Origin of captain's mast

First recorded in 1940–45

Definitions and idiom definitions from Dictionary.com Unabridged, based on the Random House Unabridged Dictionary, © Random House, Inc. 2023

Idioms from The American Heritage® Idioms Dictionary copyright © 2002, 2001, 1995 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company.