from The American Heritage® Dictionary of the English Language, 4th Edition
- n. A group of Native American peoples, also known as the Dakota, inhabiting the northern Great Plains from Minnesota to eastern Montana and from southern Saskatchewan to Nebraska. Present-day Sioux populations are located mainly in North and South Dakota.
- n. A member of any of these peoples.
- n. Any of the Siouan languages of the Sioux peoples.
from Wiktionary, Creative Commons Attribution/Share-Alike License
- proper n. Name applied to various formerly nomadic Native American tribes of the North American Great Plains.
- proper n. The group of languages spoken by the Sioux.
from the GNU version of the Collaborative International Dictionary of English
- A nation of American Indians; see Dakotas.
from The Century Dictionary and Cyclopedia
- n. A member of a family of North American Indians, now confined chiefly to North Dakota, South Dakota, and parts of Wyoming, Nebraska, and Montana.
- Of or pertaining to the Sioux; Siouan; Dakotan: as, the Sioux wars; a Sioux village.
from WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.
- 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
North American French, short for nadouéssioux, from Ottawa naadowesiwag.(American Heritage® Dictionary of the English Language, Fourth Edition)
A shortening of French Nadouessioux, from Ottawa naatowessiwak ("little snake"), which could refer to the massasauga (Sistrurus catenus), a small rattlesnake. (Wiktionary)