cistern has definitions from the fields of anatomy,zoology
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
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