from The American Heritage® Dictionary of the English Language, 4th Edition
- n. A benzodiazepine derivative that is primarily used to treat insomnia.
from Wiktionary, Creative Commons Attribution/Share-Alike License
- n. A drug generally prescribed for the short-term treatment of sleeplessness.
from WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.
- n. a frequently prescribed benzodiazepine (trade name Restoril); takes effect slowly and lasts long enough to help those people who wake up frequently during the night
Perhaps inversion of met(hyl) + (ox)azepam.(American Heritage® Dictionary of the English Language, Fourth Edition)