colt
/kəʊlt/noun
1- a young uncastrated male horse, in particular one less than four years old（尤指四岁以下的）未阉割的小雄马, 雄驹。
1.1
- a member of a junior sports team乙队选手; 青年运动队选手：
England Colts.
英格兰乙队选手。
词源
Old English; perhaps related to Swedish kult, applied to boys or half-grown animals.