1. blackwater

noun. any of several human or animal diseases characterized by dark urine resulting from rapid breakdown of red blood cells.


  • black (English)
  • black (Middle English (1100-1500))
  • water (English)
  • water (Middle English (1100-1500))

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Sentences with blackwater

1. Noun, singular or mass
Mobile homeowners may also opt for composting toilets, which completely remove the need for blackwater (the water from your toilet) disposal.