/ Dictionary / Index M MAA: Meaning and Definition of Find definitions for: MAA Pronunciation: [key] master-at-arms. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. ma ma'am Related Content Daily Word Quiz: rustic Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language