1 [C] a type of light fence that a person or a horse jumps over in a race （跨栏赛跑所用的）栏架: to clear a hurdle (= to jump over it successfully) 跨过一个栏架

2 hurdles [pl] a race in which runners or horses have to jump over hurdles 跨栏赛跑: the 200 metres hurdles 200米跨栏赛跑

3 [C] a problem or difficulty that you must solve or deal with before you can achieve sth 难关；障碍