Origin of SiouxFr, contr. ; from Nadouessioux, plural ; from Ottawa dialect of nadowe-is-iw, naadoweesiwag, an ethnic name, literally , adder: applied in variant forms in different Algonquian languages to a number of non-Algonquian groups
- A member of a group of Native American peoples, comprising the Lakota, the Santee, the Yankton, and the Yanktonai, 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, Minnesota, Montana, and Nebraska.
- Any of the Siouan languages of the Sioux peoples.
Origin of SiouxNorth American French, short for nadouéssioux, from Ottawa na·towe·ssiwak, plural of na·towe·ssi, Sioux person, from Proto-Algonquian *na·towe·wa, northern Iroquoian, probably from *-a·towe·, to speak a foreign language.
- Name applied to various formerly nomadic Native American tribes of the North American Great Plains.
- The group of languages spoken by the Sioux.