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English definition of “tap”

tap

noun [C] (PHONE)    /tæp/
a small piece of equipment that can be fixed to a phone in order to listen secretly to someone's phone calls: He claims that he knew nothing of government phone taps on journalists during those years.Spying and espionage
(Definition of tap noun (PHONE) from the Cambridge Advanced Learner's Dictionary & Thesaurus © Cambridge University Press)
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