/ Dictionary / Index O Oshawa: Meaning and Definition of Find definitions for: Osh•a•wa Pronunciation: (osh'u-wu), [key] — n. a city in SE Ontario, in S Canada, NE of Toronto, on Lake Ontario. 117,519. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. OSHA Oshkosh Related Content Daily Word Quiz: pristine Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language