1. A toilet that relies on bacteria to break down waste matter (instead of using water)
   "The eco-friendly campsite was equipped with flushless toilets to conserve water";
   - long drop [N. Amer, NZ]

Derived forms: flushless toilets

Type of: can [N. Amer, informal], commode [N. Amer], loo [Brit, informal], pot [informal], potty [informal], stool [archaic], throne [informal], toilet