/ Dictionary / Index M Mosby: Meaning and Definition of Find definitions for: Mos•by Pronunciation: (mōz'bē), [key] 1833–1916, Confederate cavalry colonel. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. Mosbacher moschate Related Content Daily Word Quiz: agitated Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language