/ Dictionary / Index I IWC: Meaning and Definition of Find definitions for: IWC Pronunciation: [key] International Whaling Commission. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. iwan iwis Related Content Daily Word Quiz: cetacean Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language