siouan has definitions from the field of linguistics
1
[ noun ] 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

Synonyms

Sioux

2
[ adjective ] of or relating to the Sioux people or their language and culture

Related terms

Sioux

3
[ noun ] (linguistics) a family of North American Indian languages spoken by the Sioux

Synonyms

Siouan_language

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