Definition of kibosh noun from the Oxford Advanced Learner's Dictionary

 

kibosh

 noun
noun
BrE BrE//ˈkaɪbɒʃ//
 
; NAmE NAmE//ˈkaɪbɑːʃ//
 
[singular]
 
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Word Origin mid 19th cent.: of unknown origin.Idioms
put the kibosh on something
 
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(informal) to stop something from happening; to spoil somebody’s plans
See the Oxford Advanced American Dictionary entry: kibosh