DictionaryreservoirWater storage
noun

reservoir

REZ-ur-vwar/ˈrezərvwɑːr/

A place or container storing a supply of fluid.

The reservoir behind the dam stores water for later use.

Compact cutaway water reservoir behind small dam, contained blue water volume and outlet pipe show storage supply; entire feature isolated with minimal bank contours, no surrounding landscape panorama.
Etymology

A reservoir is a place for “keeping back” or storing something. The word first described a place where things collect or are kept in store, then developed the specific sense of a basin holding water.

In context

National Academies - Earth and Life Studies91:08
water could be released from the c41 and c41 a canals once the reservoir was about a third full to maintain and improve water supply
Independent Scientific Review of Everglades Restoration Progress - Meeting 4 of the 2024 Review

More examples

  • Fill the coffee maker's reservoir with fresh water.
  • The car's washer fluid reservoir is nearly empty.
  • Several reservoirs supply drinking water to the city.

Forms

reservoir · reservoirs

Similar words

tank
A manufactured container, rather than a lake or natural basin.
cistern
A water storage tank, often underground or used to collect rainwater.