D defs.my
Entry 1 sense Webster, 1913

Dakotas

/dək-ōt'-əz/ · Da·ko·tas · IPA /dəkˈoʊtəz/
01 n. pl An extensive race or stock of Indians, including many tribes, mostly dwelling west of the Mississippi River; -- also, in part, called Sioux.
  1. 1.
    An extensive race or stock of Indians, including many tribes, mostly dwelling west of the Mississippi River; -- also, in part, called Sioux.(Ethnol.) Also: Sioux