/ Dictionary / Index O Osaka: Meaning and Definition of Find definitions for: O•sa•ka Pronunciation: (ō-sä'ku Japn. ô'sä-kä'), [key] — n. a city on S Honshu, in S Japan. 2,648,158. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. See also: osaka (Thesaurus) Osage orange osar Related Content Daily Word Quiz: deleterious Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language