/ Dictionary / Index O Oyo: Meaning and Definition of Find definitions for: O•yo Pronunciation: (ō'yō), [key] — n. a city in W Nigeria. 152,000. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. oyez oyster Related Content Daily Word Quiz: entomology Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language