from The American Heritage® Dictionary of the English Language, 4th Edition
- n. A drug, C19H21NO3, derived from morphine, used to treat respiratory depression and other effects of an overdose of narcotics.
from Wiktionary, Creative Commons Attribution/Share-Alike License
- n. A drug used to reverse opioid overdose.
from WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.
- n. a narcotic antagonist (trade name Nalline) that counteracts the effects of narcotics (especially the effects of poisoning by morphine)
Short for N-allylnormorphine, its chemical name.(American Heritage® Dictionary of the English Language, Fourth Edition)
Contraction of N-allyl-normorphine. (Wiktionary)