/byel'oh rush"euh, bel'oh-/ , n.
1. Official name, Belarus . Formerly, White Russian Soviet Socialist Republic, Byelorussian Soviet Socialist Republic . a republic in E Europe, N of Ukraine: formerly a part of the Soviet Union. 10,439,916; 80,154 sq. mi. (207,600 sq. km). Cap.: Minsk.
2. a region in the W part of former czarist Russia.
Also, Belorussia . Also called White Russia .