a type of illicit opiate narcotic drug formed from the incomplete acetylation of morphine. It is also called brown.
"They found a large amount of "tar heroin" in his car, it was in a brown bag in the bag with tin foil and a straw waiting to be smoked"
by HeroineHelper January 5, 2012
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Heroin is an illegal drug processed from morphine, a natural opiate derived from specific varieties of poppy. Heroin is the single most abused opiate in the US, and has one of the most serious addiction rates of all illegal drugs

Street heroin comes in a variety of forms. Most commonly on the west coast, it is sold on the street as a dusty brown to dark brown powder (if it is cut with lactose such as powdered milk)or sticky black substance known as black-tar heroin (which may be really hard to break)
Back in the day, the mexican cartels used cheap poor things to manufacture and cut it with, and now, we more commonly see more purer versions of it, as manufacturing procceses become better.

While using Black tar (or heroin in general)a sudden surge of intense pleasure known among heroin users as "the rush." the skin flushes and the arms and legs feel heavy. Dry mouth is common, and the heroin user may also experience nausea, vomiting or intense itchiness.

Once the rush ends, heroin abusers are drowsy for several hours. Users refer to this period of time as "Nodding out." Mental functioning is slow and disoriented. Heart function and breathing slows.

heroin is “cut” with other drugs or with substances such as sugar, starch, powdered milk, or quinine. Street heroin can also be cut with strychnine, fentanyl or other poisons. Because heroin abusers do not know the actual strength of the drug or its true contents, they are at risk of overdose or death
when "julie" moved to san diego, she found black tar heroin for way cheaper than she did in san franscisco, although she paid the same every time, and never knew the quality until she smoked it.
by southerncalidreamer517 February 17, 2010
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Black tar heroin is a form of heroin that is sticky like tar or hard like coal. Its dark color is the result of crude processing methods that leave behind impurities. Despite its name, black tar heroin can also be dark orange or dark brown in appearance. It is generally less expensive than other forms of heroin.
Black tar heroin is impure morphine diacetate.
I am much more partial to the Black Tar Heroin rather than the powder form because the high is more intense and I can do less of it!
by MrsKLGarcia July 14, 2018
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The dirtiest form of heroin. It is black and usually contains glass and other unwanted substances. It is extremely hazardous to your health and probably contains some form of brain damaging substance. It is much more harmful than regular heroin.
You must be a true addict and a moron to do Black Tar Heroin.
by valoem February 7, 2005
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a black silky substance that when ingested makes you dizzy , and then you go insane
guy: yo, you got the clout
drug dealer: yeah man i brought the black tar heroin
by oh yes big pappy October 5, 2020
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A black tar heroin Sandwich is a sandwich including 1. a piece of white bread 2. Black tar heroin 3. Chicken nuggets 4. more black tar heroin 5. a piece of bread on top
Mom: "son what sandwich would you like for today"
Son: " a black tar heroin sandwich thanks mom"
Mom: where do i get the chicken nuggets?"
Son: IDK in the freezer
by yeetermeater December 17, 2019
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