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English definition of “G-man”


noun [C]     /ˈdʒiː.mæn/ (plural -men   /-men/   ) US slang
a government official in the US, especially one who works for the FBI People who work for the police serviceUnited States politics and government
(Definition of G-man noun from the Cambridge Advanced Learner's Dictionary & Thesaurus © Cambridge University Press)
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