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English definition of “panic button”

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panic button

noun [C usually singular] uk   us  
a device, usually a button, that is used to call for help by someone in a dangerous situation
Translations of “panic button”
in Chinese (Traditional) 報警按鈕,緊急呼救按鈕…
in Chinese (Simplified) 报警按钮,紧急呼救按钮…
(Definition of panic button from the Cambridge Advanced Learners Dictionary & Thesaurus © Cambridge University Press)
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