West a horse trained to work with cattle; a cowboy's horse.
See also: cow horse
- 1888  (1890)  A clever cow pony will never come to grief with a lariat, and can generally unwind himself by going the reverse way.
- 1960  There is nothing--no, not so much as the doff of a hat--to the cowpony, the packhorse, the mustang, the Indian horses, the quarter horse, the pinto, the hundreds of thousands of animals which opened up the Canadian west and which to this day, remain one of the most useful and used animals over vast sections of British Columbia and Alberta