snowhorse

noun

1. A visual representation of a horse made from snow.“One sees instead a small snowhorse / Made by children one dull afternoon, / Though now it gleams like Triton’s foal / New-born from the unblemished foam.”
2. A horse bred or used for service in the winter.“Longview Farms, now operated by Loula Long Combs, better known throughout the United States as a breeder and exhibitor of thoroughbred snowhorses, is disposing of its 758 fine grade dairy cattle and replacing them with 700 beef cattle which need less attention.”