cistern
noun /ˈsɪstən/
/ˈsɪstərn/
- enlarge imagea container in which water is stored in a building, especially one in the roof or connected to a toiletTopics Houses and homesc2Oxford Collocations DictionaryCistern is used after these nouns:
- lavatory
Word OriginMiddle English: from Old French cisterne, from Latin cisterna, from cista ‘box’, from Greek kistē.