drug Meaning in the Cambridge English Dictionary
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Meaning of “drug” in the English Dictionary

"drug" in British English

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drugnoun [C]

uk   us   /drʌɡ/

drug noun [C] (MEDICINE)

B2 any ​natural or ​artificially made ​chemical that is used as a ​medicine: anti-cancer/​fertility/pain-killing drugs a prescription drug drug ​therapy He takes several drugs for his ​condition.
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drug noun [C] (ILLEGAL SUBSTANCE)

B2 any ​natural or ​artificially made ​chemical that is taken for ​pleasure, to ​improve someone's ​performance of an ​activity, or because a ​person cannot ​stop using it: illegal drugs a drug addict drug addiction/​abuse She ​began to ​suspect that her ​son was on/taking/doing drugs. She was ​suspected of being a drug dealer. His ​sondied of a drug overdose. any ​activity that you cannot ​stop doing: Work is a drug for him.
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drugverb [T]

uk   us   /drʌɡ/ (-gg-)
to give a ​person or ​animal a ​chemical that ​causes him, her, or it to ​losefeeling or ​becomeunconscious: The ​killerconfessed that he often drugged his ​victims before he ​killed them. She was ​heavily drugged to ​ease the ​pain.UK 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 ​evenknew we were there.
(Definition of drug from the Cambridge Advanced Learner’s Dictionary & Thesaurus © Cambridge University Press)

"drug" in American English

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drugnoun

 us   /drʌɡ/

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 ​improveperformance in an ​activity or because a ​person cannot ​stop using it

drugverb [T]

 us   /drʌɡ/ (-gg-)

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)

"drug" in Business English

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drugnoun [C]

uk   us   /drʌɡ/
a ​natural or artificially made substance that is used as a ​medicine: an anti-cancer drug The ​state is grappling for ways to ​curbrising drug ​costs in its $1 ​billionMedicaid drug ​budget.
a ​natural or artificially made substance, especially one that is ​illegal, which is taken for pleasure, to ​improveperformance in an ​activity, or because someone is addicted (= cannot ​stop taking it): abanned/​illegal drugtake/abuse drugs He ​admittedabusing drugs and alcohol his entire adult ​life before ​ending up in jail.
(Definition of drug from the Cambridge Business English Dictionary © Cambridge University Press)
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