/ Dictionary / Index G grand duchess: Meaning and Definition of Find definitions for: grand' duch'ess Pronunciation: [key] the wife or widow of a grand duke. a woman who governs a grand duchy in her own right. a daughter of a czar or of a czar's son. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. grand drapery grand duchy Related Content Daily Word Quiz: bungled Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language