cistern 2
noundomain: artefact
Princeton WordNet [ver.3.1]
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EnglishDefinition
a tank that holds the water used to flush a toilet
Hypernym
tank 2
noun
a large (usually metallic) vessel for holding gases or liquids
EnglishMember_holonym
ballcock 2
noun
A ballcock (also balltap or float valve) is a mechanism or machine for filling water tanks, such as those found in flush toilets, while avoiding overflow and (in the event of low water pressure) backflow.
