WordWeb Online

1. A family of North American Indian languages spoken by the Sioux
   - Siouan language
    
2. A member of a group of North American Indian peoples who spoke a Siouan language and who ranged from Lake Michigan to the Rocky Mountains
   - Sioux

1. Of or relating to the Sioux people or their language and culture

Derived forms: Siouans

Type of: American Indian, American-Indian language, Amerind, Amerindian language, Buffalo Indian, Indian, Plains Indian

Encyclopedia: Siouan