cistern

definition: an artificial reservoir for storing liquids
example:
speech part: noun
synonyms:
definition: a tank that holds the water used to flush a toilet
example:
speech part: noun
synonyms: water tank
definition: a sac or cavity containing fluid especially lymph or cerebrospinal fluid
example:
speech part: noun
synonyms: cisterna

cistern is explained and pronounced

How cistern is being used?