/ Dictionary / Index A archduke: Meaning and Definition of Find definitions for: arch•duke Pronunciation: (ärch'dk', -dyk'), [key] — n. a title of the sovereign princes of the former ruling house of Austria. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. See also: archduke (Thesaurus) archduchy archdukedom Related Content Daily Word Quiz: fervor Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language