[waw-ter-kool, wot-er-]
verb (used with object)
  1. to cool by means of water, especially by water circulating in pipes or a water jacket, as an engine or machine gun.

Origin of water-cool

First recorded in 1895–1900
Related formswa·ter-cooled, adjective
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018

British Dictionary definitions for water-cool


  1. (tr) to cool (an engine, etc) by a flow of water circulating in an enclosed jacketCompare air-cool
Derived Formswater-cooled, adjectivewater-cooling, adjective
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012