/ Dictionary / Index I iwan: Meaning and Definition of Find definitions for: i•wan Pronunciation: (ē'wän), [key] — n. a vaulted portal opening onto a courtyard: used often in Iranian mosque architecture. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. Iwaki IWC Related Content Daily Word Quiz: acquiesce Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language