/ Dictionary / Index M Mlle.: Meaning and Definition of Find definitions for: Mlle. Pronunciation: [key] Mademoiselle. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. M-line Mlles. 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