from The American Heritage® Dictionary of the English Language, 4th Edition
- n. A night of the week exclusive of Saturday and Sunday.
from Wiktionary, Creative Commons Attribution/Share-Alike License
- n. The evening of a weekday.
from WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.
- n. any night of the week except Saturday or Sunday
Sorry, no etymologies found.