LSD

LSD

An initialism of "lysergic acid diethylamide," commonly referred to simply as "acid," a hallucinogenic drug that alters one's thoughts or emotions or causes one to see or hear things that are not real. Somebody spiked his drink with LSD, and he spent the rest of the night tripping out in the corner of the room. One time, I took so much LSD that I hallucinated an entire conversation with a friend who wasn't even in the same room with me.

Farlex Dictionary of Idioms. © 2024 Farlex, Inc, all rights reserved.

LSD

n. lysergic acid diethylamide, a hallucinogenic drug. (Initialism. Drugs. A mainstay of the 1960s and 1970s drug culture.) LSD isn’t the problem it used to be, but it’s far from gone.

McGraw-Hill's Dictionary of American Slang and Colloquial Expressions Copyright © 2006 by The McGraw-Hill Companies, Inc. All rights reserved.