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English definition of “drug”

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drug

noun  /drʌɡ/ us  

drug noun (MEDICINE)

[C] any chemical that is used as a medicine: over-the-counter/prescription drugs

drug noun (ILLEGAL SUBSTANCE)

[C/U] a chemical or other substance that is illegally used, sometimes to improve performance in an activity or because a person cannot stop using it

drug

verb [T]  /drʌɡ/ (-gg-) us  

drug verb [T] (GIVE MEDICINE)

to give a person or animal a chemical that causes a loss of feeling or the condition of being unconscious: He couldn’t talk to us because he had been drugged.
(Definition of drug from the Cambridge Academic Content Dictionary © Cambridge University Press)
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