A member of a Native American people originally from the Great Plains, or their Algonquian language.
From French 'Cheyenne', adapted from the Cheyenne Tsétsêhéstâhese (their actual name meaning 'people speaking another language'), entered English through French colonial records.
The Cheyenne called themselves 'Tsétsêhéstâhese,' which means 'people who speak a similar language'—the French version 'Cheyenne' stuck in English, replacing their actual self-designation.
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