slang A hypodermic syringe, especially when used for illegal drugs. Syringes were at one time made from glass. The thought of Tommy shooting himself up with a glass gun is too terrible.
Farlex Dictionary of Idioms. © 2015 Farlex, Inc, all rights reserved.
n. a hypodermic syringe. (Drugs.) A lot of those gangsters don’t even use a glass gun.
McGraw-Hill's Dictionary of American Slang and Colloquial Expressions Copyright © 2006 by The McGraw-Hill Companies, Inc. All rights reserved.