Definition of cheyenne river in English English dictionary
A river rising in eastern Wyoming and flowing about 848 km (527 mi) east then northeast to the Missouri River in central South Dakota. River, northern central U.S. Rising in eastern Wyoming, it flows northeast 527 mi (850 km) to join the Missouri River in central South Dakota. Angostura Dam, part of the Missouri River basin irrigation project, is on the river near Hot Springs, S.D