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Noun: big H
Usage: slang
  1. A street name for heroin
    "The police were investigating dealers selling big H in the neighbourhood";
    - hell dust [slang], nose drops [slang], smack [slang], thunder [slang], skag [slang], scag [slang]

Type of: diacetylmorphine, diamorphine, heroin, junk [informal]

Encyclopedia: Big H