/ Dictionary / Index M Msgr.: Meaning and Definition of Find definitions for: Msgr. Pronunciation: [key] Monseigneur. Monsignor. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. M.S.G.Mgt. M.Sgt. Related Content Daily Word Quiz: soporific Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language