Heroin (INN: diacetylmorphine, BAN: diamorphine) is a semi-synthetic opioid synthesized from morphine, a derivative of the opium poppy. The white crystalline form is commonly the hydrochloride salt diacetylmorphine hydrochloride. Upon crossing the blood-brain barrier, which occurs soon after introduction of the drug into the bloodstream, heroin is converted into monoacetylmorphine and morphine, the compounds that mimic the action of endorphins, creating a sense of extreme well-being with the feeling centered in the gut. Heroin affects the bodies Central Nervous System over stimulating the bodies creation of its own naturally occurring pain killers known as endorphins. Long term use can lead to intense physical dependence known as being SICK. Symptoms such as uncontrollable bowel functions, vomiting, sweating, and intense muscle aches, especially in the lower legs are common, and last acutely anywhere from 7 to 10 days. Acute withdrawal is followed by a feeling of lag where even the most common functions like brushing ones teeth is a chore. This lag can last months. A first time user takes longer to acquire a habit (addicted), than someone who has already been addicted. One of the most common methods of heroin use is via intravenous injection, although it may be smoked or snorted depending on purity. Heroin is commonly seen in two different forms, one: as a brown hard toffee like substance known as Black Tar, and two: as a white powder known as China White. The majority of black tar heroin comes from Mexico well the vast supply of the white powder commonly known as china white comes from Indochina.
My back was killing me, and the Hillbilly Herion that my doctor prescribed wasn't doing a thing, so I copped me a bag of that black tar heroin my boy Juan be slinging.
by Harry James Roder December 17, 2007
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The drug that once you do, will probably result in everyone abandoning you, everyone you've ever known hating you, you most likely taking it up the ass repeatedly for it, and that's before commiting an hero.

If you're craving it, it's a sign you seriously screwed up in life and should seek help. Seriously.

Seriously stop reading this and go to rehab, or get on methadone. Just do it. You'll thank me later. You're loved ones will thank you. Your mother will thank you. Your father will thank you. People you probably never known well will just be grateful that you're still alive.
I'll let you jizz on my face for a bag of heroin
by AnEdgelord January 09, 2020
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semi-synthetic derivitive of morphine that creates feelings of bliss in users. heroin is very addictive, but feels good enough that most addicts at some point decided that they didn't care if it was addictive or not.
heroin makes me happy in ways that i didn't know anything ever could.
by smee April 10, 2003
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I've tried that Chinese thing with the needles. Acupuncture? Um no, heroin.
by Angelacia May 25, 2007
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A drug that kills people. Also known as Diacetylmorphine, Dragon, Dope, Heron, Herone, Hero, Hera, H, Big H, White, China White, White Nurse, White Lady, White Horse, White Girl, White Boy, White Stuff, Boy, He, Black, Black Tar, Black Pearl, Black Stuff, Black Eagle, Brown, Brown Crystal, Brown Sugar, Brown Tape, Brown Rhine, Chiba, Chiva, Chieva, Mexican Brown, Mexican Mud, Mexican Horse, Junk, Tar, Smack, Snow, Snowball, Scag, Scat, Sack, Skunk, Number 3, Number 4, Number 8, Bombita, Brea, Blanco, Bonita, Caballo, Calbo, Carga, Carne, Chapopote, Chatarra, Chicle, Cocofan, Gato, Heroina, La Buena, La Chiva, Polvo, Tecata, Tigre, Tigre Blanco, Tigre del Norte, Vidrio and Zoquete.
Cadillac Drake had taken quite a fall, from his heyday as a successful hustler to his dismal end as a homeless heroin addict.
by MousseAuChocolat February 09, 2021
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A female who's duty is to take as much heroin as possible.
Her powers include:
Immunity to heroin

She is also often called #yusie
Me: daaamn #yusie you're a real heroin heroine
by Nik ger hater June 09, 2019
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