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Meaning of heroin

her•o•in

Pronunciation: (her'ō-in), [key]
— n. Pharm.
  1. a white, crystalline, narcotic powder, CHNO, derived from morphine, formerly used as an analgesic and sedative: manufacture and importation of heroin are now controlled by federal law in the U.S. because of the danger of addiction. Also called
Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease.
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