1. To fall asleep, usually briefly or when one is not mean to. I was so tired from staying up all night that I kept nodding out throughout the day.
2. To enter a euphoric state between consciousness and unconsciousness as a result of drug use, especially heroin or opioids. We all just got our fix and nodded out in the living room. I noticed his skin turning blue after he nodded out, so I called an ambulance.
Farlex Dictionary of Idioms. © 2015 Farlex, Inc, all rights reserved.
mod. in heroin euphoria; under the influence of heroin. (Drugs.) Max nodded out after his fix.
McGraw-Hill's Dictionary of American Slang and Colloquial Expressions Copyright © 2006 by The McGraw-Hill Companies, Inc. All rights reserved.