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English definition of “smoking gun”

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smoking gun

noun [C]  /ˈsmoʊ·kɪŋ ˈɡʌn/ us  
information that proves who committed a crime: The tapes provided prosecutors with the smoking gun they needed.
Translations of “smoking gun”
in Chinese (Traditional) 確鑿的罪證…
in Chinese (Simplified) 确凿的罪证…
(Definition of smoking gun from the Cambridge Academic Content Dictionary © Cambridge University Press)
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