/ Dictionary / Index D duarchy: Meaning and Definition of Find definitions for: du•ar•chy Pronunciation: (d'är-kē, dy'-), [key] — pl. -chies. a government or form of government in which power is vested equally in two rulers. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. Duane Duarte Related Content Daily Word Quiz: tactful Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language