/ Dictionary / Index M marchesa: Meaning and Definition of Find definitions for: mar•che•sa Pronunciation: (mär-kā'zuIt.mär-ke'zä), [key] — pl. -se an Italian noblewoman, equivalent in rank to a marquise. the wife or widow of a marchese. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. Marches marchese 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