Pronunciation: (ō-neg'u; Russ. u-nye'gu), [key]
1. Lake, a lake in the NW Russian Federation in Europe: second largest lake in Europe. 3764 sq. mi. (9750 sq. km).
2. a river in the NW Russian Federation in Europe, flowing N to Onega Bay. 250 mi. (405 km) long.
Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease.