/ Dictionary / Index C cayuse: Meaning and Definition of Find definitions for: cay•use Pronunciation: (kī-ys', kī's), [key] — n. a horse, esp. an Indian pony. Also calleda cold wind blowing from the east. Cay•use Pronunciation: (kī-ys', kī's), [key] — pl. -us•es, -use. a member of a tribe of North American Indians now living in Oregon. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. See also: cayuse (Thesaurus) Cayuga Lake CB Related Content Daily Word Quiz: wary Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language