Date: 1600-1700
Language: French
Origin: réservoir, from Old French reserver; RESERVE1


res‧er‧voir [countable]
1DN a lake, especially an artificial one, where water is stored before it is supplied to people's houses
2 a large amount of something that is available and has not yet been used
reservoir of
She found she had reservoirs of unexpected strength.
3 technicalT a part of a machine or engine where a liquid is kept before it is used

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