/ Dictionary / Index M Madlyn: Meaning and Definition of Find definitions for: Mad•lyn Pronunciation: (mad'lin), [key] — n. a female given name, form of Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. madly madm. Related Content Daily Word Quiz: vertigo Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language