American English

Definition of narcotic noun from the Oxford Advanced American Dictionary



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  1. 1a powerful illegal drug that affects the mind in a harmful way. heroin and cocaine are narcotics a narcotics agent (= a police officer investigating the illegal trade in drugs)
  2. 2(medical) a substance that relaxes you, reduces pain, or makes you sleep a mild narcotic
See the Oxford Advanced Learner's Dictionary entry: narcotic

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