slang Hashish that is particularly strong. Whoa, that's some heavy hash—I can already feel its effects.
Farlex Dictionary of Idioms. © 2015 Farlex, Inc, all rights reserved.
n. potent cannabis. (Drugs.) This is heavy hash, and it will cost you.
McGraw-Hill's Dictionary of American Slang and Colloquial Expressions Copyright © 2006 by The McGraw-Hill Companies, Inc. All rights reserved.