crupper/ˈkrʌpə(r); `krʌpɚ/ n1 leather strap fixed to a saddle or harness and looped under a horse's tail 後革酋（拴在马鞍或挽具上兜过马尾的皮带）.2 rear part of a horse, above the back legs （马的）臀部.
牛津英汉双解词典