vein brother n.—Gloss: a man with whom you get high on injected drugs, especially if you share a needle. «But nothing in their records, or in their daily appearances around the neighborhood, could foretell what became the macabre final...
flash blood n.— «Many injecting drug users share dirty needles or use a dangerous cash-saving technique known as “flash blood,” in which a user injects heroin or another illicit substance and then draws a syringe full of blood...