Also found in: Thesaurus.
tr.v. wa·ter-cooled, wa·ter-cool·ing, wa·ter-cools
To cool (an engine) with water, especially circulating water.
(Mechanical Engineering) (tr) to cool (an engine, etc) by a flow of water circulating in an enclosed jacket. Compare air-cool
to cool by means of water, esp. by water circulating in pipes or a water jacket.
Past participle: water-cooled