/ Dictionary / Index C captain's mast: Meaning and Definition of Find definitions for: cap'tain's mast" Pronunciation: [key] a session at which the captain of a naval ship hears and acts on the cases of enlisted personnel charged with committing offenses. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. captainship captan Related Content Daily Word Quiz: hedonist Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language