Meaning of RESERVOIR in English

RESERVOIR

/ ˈrezəvwɑː(r); NAmE ˈrezərv-/ noun

1.

a natural or artificial lake where water is stored before it is taken by pipes to houses, etc.

2.

( formal ) a large amount of sth that is available to be used

3.

( technical ) a place in an engine or a machine where a liquid is kept before it is used

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WORD ORIGIN

mid 17th cent.: from French réservoir , from réserver to reserve, keep.

Oxford Advanced Learner's English Dictionary.      Оксфордский английский словарь для изучающик язык на продвинутом уровне.