Synonym: diacetylmorphine. Similar words: heroine, groin, heroic, heroism, asteroid, roil, roiled, adroit. Meaning: ['herəʊɪn] 
n. a narcotic that is considered a hard drug; a highly addictive morphine derivative; intravenous injection provides the fastest and most intense rush.
n. a narcotic that is considered a hard drug; a highly addictive morphine derivative; intravenous injection provides the fastest and most intense rush. 
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1. Customs have made their biggest ever seizure of heroin.
2. The Customs have seized large quantities of smuggled heroin.
3. Several of her friends were mainlining heroin.
4. The Customs have found heroin hidden in freight.
5. Heroin is obtained from morphine and is extremely addictive.
6. The clinic detoxes heroin addicts.
7. Queensland heroin users will be able to detoxify rapidly on Naltrexone after a two-year clinical trial of the controversial drug begins in Brisbane this week.
8. Many of the women are addicted to heroin and cocaine.
9. Why did the incidence of heroin use continue to climb?
10. He was caught pushing heroin to schoolchildren.
11. He then began dealing in heroin.
12. He had overdosed on heroin.
13. By that time he was mainlining heroin.
14. These young people die wholesale from heroin overdoses.
15. He was high on heroin at the time.
16. She had an addiction to heroin.
17. 20 kilos of heroin were seized yesterday at Heathrow.
18. Heroin and cocaine are classed as hard drugs.
19. We shot up heroin in the playground.
20. How long have you been doing heroin?
21. She died from a heroin overdose.
22. He was permanently strung out on heroin.
23. He banged up on heroin.
24. Cocaine(sentencedict.com), LSD and heroin are all illegal drugs/substances.
25. She was arrested for pushing heroin.
26. She was caught trying to smuggle 26 kilos of heroin out of/into the country.
27. He had to surrender the watches to the police in which the heroin was hidden.
28. But it's you ,your scent(sentencedict.com/heroin.html), it's like a drug to me. You're like my personal brand of heroin.
29. By the age of 14 he was addicted to heroin.
30. The two women claimed they were the unwitting victims of a drugs dealer who planted a large quantity of heroin in their luggage.