EXAMPLES FROM THE WEB FOR CAYUSE
Lucky the cayuse who happens to be the right size for his harness.
You wish to know the name of the man who Union-Jacked your cayuse?
Powder Face is woman broke, an' gentle as any cayuse can get.
Not much on looks, Bill, but a cayuse don't cover ground on his looks.
My horse, I knew, could outrace any cayuse of the Sioux band.
They got the Judge, ‘Brand’—they run him off, with my cayuse!
I'll bet they gave him a cayuse an' started him off while we've been losing time in here.
Fortunately, the horse was a Cayuse and used to that kind of work.
In that fierce and proud regard was something the Cayuse could not fathom.
The competition was close, but Snoqualmie the Cayuse won the day.
"horse, Indian pony," 1841, American English, said to be a Chinook (native Pacific Northwest) word; also the name of an Indian group and language (1825), of unknown origin.