Wiktionary
n. 1 A mixture of baking soda and cocaine in solid form that is smoked in a pipe as a narcotic. 2 A mixture of salt substitute, ether, and cocaine in a semi-liquid form, which is far more potent than if made with baking soda alone.
Wikipedia
Crack cocaine (crack) is a free base form of cocaine that can be smoked. It offers a short but intense high to smokers. The Manual of Adolescent Substance Abuse Treatment calls it the most "addictive" (effective) form of cocaine. Crack cocaine is commonly used as a recreational drug. Crack first saw widespread use in primarily impoverished inner city neighborhoods in New York, Los Angeles, and Miami in late 1984 and 1985; its rapid increase in use and availability is sometimes termed as the " crack epidemic".
Usage examples of "crack cocaine".
They talked about selling sex in the harrowing age of AIDS and crack cocaine.
Black Americans were hurt more by crack cocaine than by any other single cause since Jim Crow.
Hector would go up there and come down with a hundred-dollar bill for crack cocaine or to go to the liquor store.
Anthony did sell crack cocaine to an undercover Charlotte police officer.
He would have given away heroin or even crack cocaine if that had been his goal.
In rural Montana, she wouldn't have to worry about drive-by gang shootings, carjackings, ATM robberies that frequently involved casual murder, drug dealers peddling crack cocaine on every corner, follow-home stickups--or child molesters who slipped off freeways, cruised residential neighborhods, trolled for prey, and then disappeared with their Wlch into the anonymous urban sprawl.