| siouan | (n) a family of North American Indian languages spoken by the Sioux, Syn. Siouan language |
| siouan | (adj) of or relating to the Sioux people or their language and culture |
| siouan-speaking | (adj) able to communicate in a Siouan language |
| sioux | (n) 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, Syn. Siouan |