1N-COUNT （某项运动的）狂热爱好青年 A jock is a young man who is enthusiastic about a particular sport and spends a lot of time playing it. （某项运动的）狂热爱好青年 [informal]
...an all-American football jock.
全美橄榄球大赛的年轻球迷
2N-COUNT 同disc jockey A jock is the same as a disc jockey . 同disc jockey [informal]