Answer:

scag

Answer	Crossword Clue
SCAG	Slang for heroin
SCAG	Heroin, slangily
SCAG	Heroin, in slang

SCAG	Heroin, to a narc
SCAG	Heroin, to addicts
SCAG	Morphine derivative
SCAG	A morphine derivative, slangily
SCAG	Heroine, slangily
SCAG	Heroin, on the street
SCAG	Heroin, informally
SCAG	Morphine derivative, slangily