a member of any of the North American Indian peoples formerly inhabiting the Great Plains: they were of various linguistic stocks but shared certain cultural traits, such as the nomadic following of bison herds
"Plains Indian." YourDictionary, n.d. Web. 10 November 2018. <https://www.yourdictionary.com/plains-indian>.
Plains Indian. (n.d.). Retrieved November 10th, 2018, from https://www.yourdictionary.com/plains-indian
A member of any of the Native American peoples inhabiting the Great Plains of the United States and Canada. The Plains Indians spoke a variety of unrelated languages but shared certain cultural features such as nomadic buffalo hunting, the use of conical tepees, and a reliance on the horse in hunting and warfare.