cay•usePronunciation: (kī-yOOs', kī'OOs), [key]
1. Western U.S.
a horse, esp. an Indian pony.
Also called cayuse' wind'. Northwestern U.S.
a cold wind blowing from the east.
Cay•usePronunciation: (kī-yOOs', kī'OOs), [key]
—pl. -us•es, (esp. collectively) -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.