dust
n. a powdered drug: heroin, phencyclidine (PCP), cocaine; fine cannabis.It's the dust that can really do you damage.Wally got hold of some kind of dust and took it to the police.
snow and snowball; snowflakes; snow stuff
n. a powdered or crystalline narcotic: morphine, heroin, or cocaine. (Now almost always the latter.)Now, snow is almost old-fashioned.The price of snow has come down a lot as South America exports more of it.