DictionaryAI

heroin

noun
SayHE-roh-in/ˈhɛɹoʊ.ɪn/UK/ˈhɛɹəʊ.ɪn/

Pluralheroins

Often confused with heroine

2 meanings of heroin

Practice

  1. 1
    nouncountable or uncountable
    A strong drug made from opium that makes people feel very happy, is hard to quit, and is illegal in most countries.

    Her uncle spent years trying to quit heroin.

    Police found heroin hidden in the back of the truck.

    Note
  2. 2
    nounobsolete
    Obsolete form of heroine. Today this meaning is spelled heroine.
    Note

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Origin

From German Heroin, first a brand name in the 1890s. It is based on the Greek word for "hero", maybe because the drug worked so strongly.