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English definition of “drug”

drug

verb [T]     /drʌɡ/ (-gg-)
to give a person or animal a chemical that causes him, her, or it to lose feeling or become unconscious: The killer confessed that he often drugged his victims before he killed them. She was heavily drugged to ease the pain.informal We visited her in hospital but she was drugged to the eyeballs (= had been given a lot of drugs) and I don't think she even knew we were there.Drugs - general wordsSpecific types of drugAdministering drugs and medicines
(Definition of drug verb from the Cambridge Advanced Learner's Dictionary & Thesaurus © Cambridge University Press)
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