Definition of black water in English:

black water

Line breaks: black water

noun

[mass noun] technical
  • Waste water and sewage from toilets. Compare with grey water.
    More example sentences
    • After consumption, about 80 per cent of the water comes out as waste and this includes black water and grey water.
    • The sludge disaster was the nation's worst-ever black water spill.
    • You can use water - not your drinking water, but gray water, or water that has been used before but is not yet dirtied to the point of black water.

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Word of the day maelstrom
Pronunciation: ˈmeɪlstrəm
noun
a powerful whirlpool in the sea