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English definition of “reservoir”

reservoir

noun [C] uk   /ˈrez.ə.vwɑːr/ us    /-ɚ.vwɑːr/
a place for storing liquid, especially a natural or artificial lake providing water for a city or other area a large supply of something: The universities constitute a reservoir of expert knowledge.
(Definition of reservoir from the Cambridge Advanced Learners Dictionary & Thesaurus © Cambridge University Press)
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