1. in. to leave; to depart. They dusted out of there at about midnight.
2. tv. to defeat someone; to win out over someone. We dusted the other team, eighty-seven to fifty-four.
3. tv. to kill someone. (Underworld.) The gang set out to dust the witnesses but got only one of them.
4. n. fine tobacco for rolling cigarettes. (Prisons.) How about trading a little dust for this candy bar?
5. n. a powdered drug: heroin, phencyclidine (PCP), cocaine; fine cannabis. (Drugs.) It’s the dust that can really do you damage.
6. tv. to add a powdered drug to the end of a (tobacco or cannabis) cigarette. (Drugs.) Pete dusted one, then lit it up.
7. n. worthless matter. John said that Frank was going to be dust if Mr. Gutman ever heard about what happened.