from The American Heritage® Dictionary of the English Language, 4th Edition
- n. The period of time when something, such as a factory or a piece of machinery, is not in operation, especially as the result of a malfunction.
from Wiktionary, Creative Commons Attribution/Share-Alike License
- n. The amount of time lost due to forces beyond one's control, as with a computer crash.
- n. A break or rest from work; leisure time.
from WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.
- n. a period of time when something (as a machine or factory) is not operating (especially as a result of malfunctions)
down + time (Wiktionary)