rhizoverbBeta
DictionaryRoot: -oir
French

-oir

place for an activity

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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.
noun

reservoir

REZ-ur-vwar/ˈrezərvwɑːr/

A place or container storing a supply of fluid.

Etymology
reLatinback, again; restoration or reversal
+servLatinkeep, preserve, or watch over
+oirFrenchplace for

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.

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