- Scag is a slang term for heroin.
An example of scag is what the heroin junkie asked the drug dealer for on the dark street corner.
Scag is a term for heroin.
scag definition by Webster's New World
Webster's New World College Dictionary Copyright © 2010 by Wiley Publishing, Inc., Cleveland, Ohio. Used by arrangement with John Wiley & Sons, Inc.
Origin: ; from uncertain or unknown; perhaps
scag definition by American Heritage Dictionary
also skagnoun Slang
Origin: Origin unknown.