- Arapaho, Arapahoe - a member of a tribe of Plains Indians formerly inhabiting eastern Colorado and Wyoming (now living in Oklahoma and Wyoming)
--1 is a kind of Algonquian, Algonquin; Plains Indian, Buffalo Indian
- Arapaho, Arapahoe - the Algonquian language spoken by the Arapaho people
--2 is a kind of Algonquian, Algonquin, Algonquian language