rainwater cistern

/ˈreɪnˌwɔːtər ˈsɪstərn/

noun

  1. A tank or reservoir used to collect and store rainwater, usually from roofs or other surfaces.

    B1

    countableformal

    • "They use a rainwater cistern to collect water for the garden."B1
    • "The new house has an underground rainwater cistern that supplies water for flushing the toilets."B2
    • "The rainwater cistern was installed to provide an alternative water source during droughts."B2

Collocations

install a rainwater cisternunderground rainwater cisternrainwater collection systemfill the rainwater cisternmaintain a rainwater cistern

Word family

rainwatercisternrainwater harvesting