noun Etymology: from Heroin, a trademark Date: 1898 a strongly physiologically addictive narcotic C 21 H 23 NO 5 that is made by acetylation of but is more potent than morphine and that is prohibited for medical use in the United States but is used illicitly for its euphoric effects, ~ism noun
HEROIN
Meaning of HEROIN in English
Merriam Webster. Explanatory English dictionary Merriam Webster. Толковый словарь английского языка Мерриам-Уэбстер. 2012