A plains dweller is someone who lives in the Great Plains region of North America. The crossword solutions for this term include Otoe (4 letters), BISON (5 letters), Ute (3 letters), Oto (3 letters), BUFFALO (7 letters), Llanero (7 letters), and Osage (5 letters). Otoe, Ute, and Oto are Native American tribes that have traditionally lived in the Great Plains region, while BISON, BUFFALO, and Osage refer to the animals that were once abundant in the area. Llanero is a Spanish word meaning 'PLAINSMAN' or 'plains dweller'.