/ Thesaurus / P Synonyms of plains indian Find synonyms for: Noun1. Plains Indian, Buffalo Indian, Indian, American Indian, Red Indianusage: a member of one of the tribes of American Indians who lived a nomadic life following the buffalo in the Great Plains of North AmericaWordNet 3.0 Copyright © 2006 by Princeton University. All rights reserved. Related Content Daily Word Quiz: feline Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language