water-jacket

¹ 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 ² 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 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 1875–80

Origin of water jacket¹

First recorded in 1865–70

Example Sentences

The cylinders of this Daimler engine were cast iron, the cylinder barrel, head, and water jacket being cast in one piece.

From Project Gutenberg

If the cylinder should be scored, the water jacket and combustion head may be saved and a new cylinder casting purchased at considerably less cost than that of the complete unit cylinder.

From Project Gutenberg

The gas is measured in the graduated cylinder on the right, which is surrounded by a water jacket and provided with a levelling bottle.

From Project Gutenberg

The Kodiopticon has a water jacket for protection of the slides from heat, and the price includes a strong wooden case, which, by reversing the top, serves as a permanent stand for the outfit.

From Project Gutenberg

The outside of the vacuum jacket was immersed in a water jacket at a steady temperature equal to that of the inflowing mercury.

From Project Gutenberg