I. shī-ˈan, -ˈen noun
( plural Cheyenne or Cheyennes )
Etymology: American French, from Dakota šahíyena
Date: 1778
1. : a member of an American Indian people of the western plains of the United States
2. : the Algonquian language of the Cheyenne people
II. shī-ˈan, -ˈen geographical name
1. river 527 miles (850 kilometers ) South Dakota flowing NE into Missouri River
2. city SE Wyoming, its capital population 53,011