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English definition of “bug”

bug

verb [T]
 
 
/bʌɡ/ (present participle bugging, past tense and past participle bugged)
LISTEN to hide a piece of equipment somewhere in order to secretly listen to people talking: [often passive] Their hotel room had been bugged.Spying and espionage
ANNOY informal to annoy someone: He's been bugging me all morning.Causing feelings of anger and displeasure
(Definition of bug verb from the Cambridge Learners Dictionary © Cambridge University Press)
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