1. (noun) a member of the Siouan people who constituted a division of the Teton Sioux and who formerly lived in the western Dakotas; they were prominent in resisting the white encroachment into the northern Great Plains

• lakota
• teton
• teton dakota
• teton sioux

2. (noun) a Siouan language spoken by the Hunkpapa

• siouan
• siouan language