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drug - definition and synonyms


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noun [countable] drug pronunciation in American English /drʌɡ/
Word Forms
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  1. 1
    an illegal substance that affects someone physically or mentally when they take it (=put it into their body)
    take/use drugs: She had never taken drugs in her life.
    be on drugs (=be affected by drugs): He acted like he was on drugs (=had taken drugs).
    1. a.
      [only before noun] involving drugs or taking drugs
      drug addict/user/dealer: Intravenous drug users are at risk from the HIV virus.
      drug trafficking/smuggling: The government has pledged to fight drug smuggling.
  2. 2
    a substance that you take to treat a disease or medical problem
    Your doctor may prescribe drugs for this condition.
    a new anti-cancer drug


a course of study which is much shorter than a university course and focuses on the skills you need for a job, especially computer-related skills

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a stupid person

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an ancient Roman system of underfloor heating, used to heat houses with hot air; from the Latin 'hypocaustum'

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