/ Dictionary / Index M madm.: Meaning and Definition of Find definitions for: madm. Pronunciation: [key] madam. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. Madlyn madman Related Content Daily Word Quiz: placid Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language