/dvee"neuh/ ; Russ. /dvyi nah"/ , n.
1. Also called Western Dvina . Latvian, Daugava . a river rising in the Valdai Hills in the W Russian Federation, flowing W through Byelorussia (Belarus) and Latvia to the Baltic Sea at Riga. ab. 640 mi. (1030) long.
2. Also called Northern Dvina . a river in the N Russian Federation in Europe, flowing NW into the White Sea. ab. 470 mi. (750 km) long.