- to surround or fit with a water jacket.
Origin of water-jacket
First recorded in 1875–80
- a water-filled casing or compartment used to water-cool something, as an engine or machine gun.
Origin of water jacket
First recorded in 1865–70
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018
Examples from the Web for water-jacket
Fixed: a barrel-casing, which is also a water-jacket, and breech-casing.
A double cylinder formed a water-jacket, connected with a water and steam chamber above, and a water-chamber below.Automobile Biographies
Lyman Horace Weeks
The loss of heat through the water-jacket is thus less in the case of a high-compression than in that of a low-compression motor.Aviation Engines
Victor Wilfred Pag
It does not heat fast, so has no need of a water-jacket, any surplus heat being removed by a system of radiation.
He pulled the Maxim's block and threw it away; shot the water-jacket full of holes.Triplanetary
Edward Elmer Smith
- a water-filled envelope or container surrounding a machine, engine, or part for cooling purposes, esp the casing around the cylinder block of a pump or internal-combustion engineCompare air jacket
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