- wastewater from toilets, garbage disposal, and industrial processes.
Compare gray water.
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018
Examples from the Web for black water
At dawn he came to tell her that Parr had the black-water fever.
Malarial and black-water fever are prevalent in Dar-es-Salaam.Seven Legs Across the Seas
"We've got black-water fever on board now, Brasse," he said in a weary voice.The White Blackbird
It quickly became pernicious, and developed into black-water fever.South Sea Tales
"And this time it will get me: just one or two little chills," he reflected, thinking of black-water fever.
- household waste water that cannot be reused without purificationCompare grey water
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012