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Jack"et (?), n. [F. jaquette, dim. of jaque. See 3d Jack, n.]


A short upper garment, extending downward to the hips; a short coat without skirts.


An outer covering for anything, esp. a covering of some nonconducting material such as wood or felt, used to prevent radiation of heat, as from a steam boiler, cylinder, pipe, etc.

3. Mil.

In ordnance, a strengthening band surrounding and reenforcing the tube in which the charge is fired.


A garment resembling a waistcoat lined with cork, to serve as a life preserver; -- called also cork jacket.

Blue jacket. Naut. See under Blue. -- Steam jacket, a space filled with steam between an inner and an outer cylinder, or between a casing and a receptacle, as a kettle. -- To dust one's jacket, to give one a beating. [Colloq.]


© Webster 1913.

Jack"et, v. t.


To put a jacket on; to furnish, as a boiler, with a jacket.


To thrash; to beat.



© Webster 1913.

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