- a river rising in the western Russian Federation flowing south through Byelorussia (Belarus) and Ukraine to the Black Sea. 1,400 miles (2,250 km) long.
- a river in NE Europe, rising in Russia, in the Valdai Hills NE of Smolensk and flowing south to the Black Sea: the third longest river in Europe; a major navigable waterway. Length: 2200 km (1370 miles)
