/ Dictionary / Index O O'Hare: Meaning and Definition of Find definitions for: O'Hare Pronunciation: (ō-hâr'), [key] — n. an airport in Chicago. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. O'Hara OHC Related Content Daily Word Quiz: spectral Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language