from The American Heritage® Dictionary of the English Language, 4th Edition
- n. Water that has been used, as for washing, flushing, or in a manufacturing process, and so contains waste products; sewage.
from Wiktionary, Creative Commons Attribution/Share-Alike License
- n. Any water that has been used by some human domestic or industrial activity and, because of that, now contains waste products.
from WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.
- n. water mixed with waste matter
waste + water (Wiktionary)