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• water jacket
  water jacket

  noun

  a water-filled casing or compartment used to water-cool something, as an engine or machine gun.
• water-jacket
  water-jacket

  verb (used with object)

  to surround or fit with a water jacket.

water jacket

¹ American  

noun

1. a water-filled casing or compartment used to water-cool something, as an engine or machine gun.

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water-jacket ² American  

[waw-ter-jak-it, wot-er-] / ˈwɔ tərˌdʒæk ɪt, ˈwɒt ər- /

verb (used with object)

1. to surround or fit with a water jacket.

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water jacket British  

noun

1. 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 engine Compare air jacket

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Etymology

Origin of water jacket¹

First recorded in 1865–70

Origin of water-jacket²

First recorded in 1875–80

Example Sentences

See Examples For:

water jacket water-jacket

It has a feeder which pushes coal in at one end and ashes out at the other, a water jacket, a small pump which circulates the heated water rapidly to radiators.

From Time Magazine Archive

The motor cylinder is surrounded by a water jacket in the usual manner, but it is unnecessary to water-jacket the displacer, as the gases are never hot.

From Encyclopaedia Britannica, 11th Edition, Volume 11, Slice 4 "G" to "Gaskell, Elizabeth" by Various

So much confidence seems to be placed in the isothermal features of this machine that usually no water jacket or spray pump is applied.

From Scientific American Supplement, No. 799, April 25, 1891 by Various

The cylinder was machined all over; two flanges, one at the bottom and the other about two-thirds of the way down provided the surfaces against which the water jacket was shrunk.

From The Wright Brothers' Engines and Their Design by Hobbs, Leonard S.

A separate stove with the fire pot and water jacket is used.

From Elements of Plumbing by Dibble, Samuel Edward

In other words the cylinder should be kept hot, but not burning, as previously explained in the paragraph in which the water-jacket is discussed.

From Gas-Engines and Producer-Gas Plants A Practice Treatise Setting Forth the Principles of Gas-Engines and Producer Design, the Selection and Installation of an Engine, Conditions of Perfect Operation, Producer-Gas Engines and Their Possibilities, the Care of Gas-Engines and Producer-Gas Plants, with a Chapter on Volatile Hydrocarbon and Oil Engines by Mathot, R. E.

A copper water-jacket is fitted, and it is in this condition that the weight of 8 4-5 pounds is obtained.

From Flying Machines: construction and operation; a practical book which shows, in illustrations, working plans and text, how to build and navigate the modern airship by Chanute, Octave

They stood at attention for a moment, then opened outwards, and in the centre of each party gleamed the fat water-jacket of a Maxim gun.

From Sanders of the River by Wallace, Edgar

The man behind the gun polished a dull place on the brass water-jacket with the blue sleeves of his coat, and looked up.

From Sanders of the River by Wallace, Edgar

The water-jacket can be easily freed from all non-adhering deposits by flushing it periodically through the medium of a conveniently placed cock.

From Gas-Engines and Producer-Gas Plants A Practice Treatise Setting Forth the Principles of Gas-Engines and Producer Design, the Selection and Installation of an Engine, Conditions of Perfect Operation, Producer-Gas Engines and Their Possibilities, the Care of Gas-Engines and Producer-Gas Plants, with a Chapter on Volatile Hydrocarbon and Oil Engines by Mathot, R. E.