nail-biter /ˈneɪlˌbaɪtɚ/ noun Learner's definition of NAIL-BITER
[singular]
: something (such as a game or movie) that causes people to feel nervous because the ending is not known until the final moment(因最后时刻才能知晓结果而)令人紧张的事 — nail-biting
/ˈneɪlˌbaɪtɪŋ/ adjective