1. (US) in drug uses.
(a) [1930s+] a 28g (1oz) packet of a powdered drug.
(b) [1950s+] any powdered, thus usu. narcotic, drug.
(c) [1970s+] phencyclidine.
2. [1990s+] (US) in prison uses.
(a) coffee with cream and sugar.
(b) (also car) a line used for transferring articles, e.g. a pack of cigarettes, from one cell to another.
(c) an easy job within the prison.
(d) (also Cadillacker) something considered the best.
(e) a vacant cell.
SE in slang uses
[1990s+] (US) a liberal, the intensity of whose pronouncements on social problems is in direct proportion to their ability to escape their existence.