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herpes zoster
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heroin
her·o·in [ hérrō in ]


noun 
Definition:
 
addictive narcotic: a white powder derived from morphine that is a highly addictive narcotic drug. It is prohibited for medical use in most countries. ( often used before a noun )
a heroin addict
[Late 19th century. < German]

Spelling Note

heroin or heroine? Do not confuse the spelling of heroin and heroine, which sound similar. Heroin is an addictive drug, as in heroin users, an overdose of heroin. A heroine is a brave woman or girl or the main woman or girl character of a novel, play, or movie.
Encarta® World English Dictionary [North American Edition] © & (P)2009 Microsoft Corporation. All rights reserved. Developed for Microsoft by Bloomsbury Publishing Plc.
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