/hɔ:s ||; hɔrs/noun1 [C] a large animal that is used for riding on or for pulling or carrying heavy loads 马
A male horse is a stallion, a female horse is a mare and a young horse is a foal. 公马叫stallion，牝马叫mare，马驹子叫foal。 2 the horses [pl] (informal 非正式) horse racing 赛马
on horseback sitting on a horse 骑着马
☞ Police on horseback are called mounted police. 骑马的警察叫做骑警(mounted police)。