Artificial intelligent assistant

wash-water

ˈwash-water
  [f. wash v.]
  Water that has been used for washing.

1853 Hickie tr. Aristoph. I. 25 Those who pour out their dirty wash-water of an evening. 1856 G. Gore Pract. Chem. in Orr's Circ. Sci. 73 The wash-waters should not be thrown away without first being tested for gold. 1877 Raymond Statist. Mines & Mining 401 The evaporation of the excess of liquid derived from the wash-waters. 1892 Photogr. Ann. II. 69 No trace of bromide could be found in the wash water. 1900 Jrnl. Soc. of Dyers XVI. 12 When, however, wash waters accumulate.

Oxford English Dictionary

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