be on tenterhooks

Từ điển Oxford Advanced Learner 8th

(be) on ˈtenterhooks idiom
(NAmE also be on ˌpins and ˈneedles)(to be) very anxious or excited while you are waiting to find out sth or see what will happen
•I've been on tenterhooks all week waiting for the results. From tenterhook, a hook which in the past was used to keep material stretched on a drying frame during manufacture.
Main entry: ↑tenterhooks_idiom