from The American Heritage® Dictionary of the English Language, 4th Edition
- n. A barbiturate, C8H12N2O3, that is a white crystalline powder and is used as a sedative and hypnotic especially in the form of its soluble salt, sodium barbital.
from Wiktionary, Creative Commons Attribution/Share-Alike License
- n. The first commercially marketed barbiturate, used as a hypnotic drug until the mid-1950s.
from WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.
- n. a barbiturate used as a hypnotic
barbit(uric acid) + -al3.(American Heritage® Dictionary of the English Language, Fourth Edition)