/ Dictionary / Index O Onega Bay: Meaning and Definition of Find definitions for: One'ga Bay' Pronunciation: [key] a bay in the NW Russian Federation in Europe, at the SW end of the White Sea. 100 mi. (160 km) long. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. Onega Oneg Shabbat* Related Content Daily Word Quiz: anecdote Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language