Sioux
WordNet
noun
(1) 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
WiktionaryText
Etymology
A shortening of , from , which could refer to the massasauga (Sistrurus catenus), a small rattlesnake.
Proper noun
Sioux
- Name applied to various formerly nomadic Native American tribes of the North American Great Plains.
- The group of languages spoken by the Sioux.