/ Dictionary / Index A after mast: Meaning and Definition of Find definitions for: af'ter mast" Pronunciation: [key] the aftermost mast of a sailing vessel. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. aftermarket aftermath Related Content Daily Word Quiz: sumptuous Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language