Quarter HorseBrE /ˈkwɔːtə hɔːs/ 🔊NAmE /ˈkwɔːrtər hɔːrs/ 🔊 noun (NAmE) a small breed of horse that can run very fast over short distances 四分之一英里赛马（美国一种在短距离内能疾跑的矮种马）