noun• informal , chiefly North American
- 1Heroin.More example sentences
- I'd say it wouldn't take much to make him try a bit of the old skag.
- Let the mocking world slide by as long as I've got my scag and my needle.
- And with his money, he'll have every skag dealer inside throwing drugs at him until he's bled dry and out of it.
early 20th century (in sense 'cigarette'): of unknown origin.