narcotic - definition and synonyms

noun [countable] 

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  1. 1
    [often plural] any illegal drug, especially one that is addictive (=that someone depends on)

    Both parents were addicted to narcotics.

    1. a.


      [only before noun] relating to illegal drugs

      narcotics abuse (=taking illegal drugs)

      narcotics trafficking (=selling narcotics)

  2. 2
    medical a drug that people use when they are very ill in order to feel less pain and sleep better