Meaning of RESERVOIR in English

RESERVOIR

n.1 a large natural or artificial lake used as a source of water supply.

2 a any natural or artificial receptacle esp. for or of fluid. b a place where fluid etc. collects.

3 a part of a machine etc. holding fluid.

4 (usu. foll. by of) a reserve or supply esp. of information.

Etymology: F r{eacute}servoir f. r{eacute}server RESERVE

Oxford English vocab.      Оксфордский английский словарь.