Definition of panic button noun from the Oxford Advanced Learner's Dictionary

 

panic button

 noun
noun
BrE
 
; NAmE
 
 
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  • a button that somebody working in a bank, etc. can press to call for help if they are in danger
  • Idioms
    press/push the panic button
     
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    to react in a sudden or extreme way to something unexpected that has frightened you The prime minister pressed the panic button yesterday as Britain’s economy plunged deeper into crisis.
    See the Oxford Advanced American Dictionary entry: panic button