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• black water

語源

From black +‎ water.

発音

名詞

blackwater (usually uncountable, plural blackwaters)

1. Water, especially in a river or other body of water, that has a naturally dark appearance.
   1. Water that contains dark organic matter such as loam or tannins. [from 15th c.]
   2. (river classification) Water that is acidic and low in nutrients. [from 20th c.]

      Coordinate terms: clearwater, whitewater

2. Blackwater fever; malaria caused by Plasmodium falciparum. [from 19th c.]
   • 1954, Doris Lessing, A Proper Marriage, HarperPerennial, published 1995, page 155:

     She began talking of the way they had died – blackwater, malaria, a neglected appendix.

3. Waste from domestic toilets; water containing fecal matter. [from 20th c.]

   Coordinate terms: nightsoil; gray water, washwater, sullage

   • 2009 March 1, “Letter: Green Cruising Efforts”, in New York Times‎:

     Ms. Conlin failed to report, among other things, that air emissions are regulated and that our industry is exploring new technologies to further reduce emissions; that our ships treat all blackwater; and that advanced wastewater purification systems discharge water cleaner than most municipal water treatment plants.

同意語

• (waste water likely to contain fecal matter): brown water, foul water, sewage

派生語