cistern
1. [ noun ] a tank that holds the water used to flush a toilet
Synonyms: water_tank
Related terms: tank
2. [ noun ] (anatomy,zoology) a sac or cavity containing fluid especially lymph or cerebrospinal fluid
Synonyms: cisterna
Related terms: sac
3. [ noun ] an artificial reservoir for storing liquids; especially an underground tank for storing rainwater
Related terms: pool reservoir rain_barrel cesspool
Similar spelling:   cisterna
  cistron
  Cistercian
  Cistrunk
  custer
  Coster
  Casterline
  caster