/ Dictionary / Index D dismast: Meaning and Definition of Find definitions for: dis•mast Pronunciation: (dis-mast', -mäst'), [key] — v.t. to deprive (a ship) of masts; break off the masts of. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. dismantle dismay Related Content Daily Word Quiz: cautious Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language