Definition of tenterhooks noun from the Oxford Advanced American Dictionary

 

tenterhooks

 noun
noun
NAmE//ˈtɛntərˌhʊks//
 
[plural]
 
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Idioms
(be) on tenterhooks
 
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(to be) very anxious or excited while you are waiting to find out something or see what will happen I've been on tenterhooks all week waiting for the results. From tenterhook, a hook that in the past was used to keep material stretched on a drying frame during manufacture.
See the Oxford Advanced Learner's Dictionary entry: tenterhooks