slang Heroin. Is it true that she used to be addicted to big H?
See also: big
Farlex Dictionary of Idioms. © 2015 Farlex, Inc, all rights reserved.
n. heroin. (Drugs.) She’s started on big-H. Soon she’ll be so hooked!
McGraw-Hill's Dictionary of American Slang and Colloquial Expressions Copyright © 2006 by The McGraw-Hill Companies, Inc. All rights reserved.