river in W Siberia, flowing from the S Urals into the Irtysh: 1,042 mi (1,677 km)
See Tobol in American Heritage Dictionary 4
(tə-bôlˈ)
A river of north-central Kazakhstan and west-central Russia rising in the southeast foothills of the Ural Mountains and flowing about 1,690 km (1,050 mi) northeastward to the Irtysh River.