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Definition of Jacket
1. Noun. A short coat.
Generic synonyms: Coat
2. Verb. Provide with a thermally non-conducting cover. "The tubing needs to be jacketed"
3. Noun. An outer wrapping or casing. "Phonograph records were sold in cardboard jackets"
Generic synonyms: Wrap, Wrapper, Wrapping
4. Verb. Put a jacket on. "The men were jacketed"
5. Noun. (dentistry) dental appliance consisting of an artificial crown for a broken or decayed tooth. "Tomorrow my dentist will fit me for a crown"
Generic synonyms: Dental Appliance
Category relationships: Dental Medicine, Dentistry, Odontology
6. Noun. The outer skin of a potato.
Generic synonyms: Peel, Skin
7. Noun. The tough metal shell casing for certain kinds of ammunition.
Definition of Jacket
1. n. A short upper garment, extending downward to the hips; a short coat without skirts.
2. v. t. To put a jacket on; to furnish, as a boiler, with a jacket.
Definition of Jacket
1. to provide with a jacket (a short coat) [v -ED, -ING, -S]
Medical Definition of Jacket
1. 1. A short upper garment, extending downward to the hips; a short coat without skirts. 2. An outer covering for anything, especially. 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. In ordnance, a strengthening band surrounding and reenforcing the tube in which the charge is fired. 4. A garment resembling a waistcoat lined with cork, to serve as a life preserver; called also cork jacket. Blue jacket. See 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. Origin: F. Jaquette, dim. Of jaque. See Jack. Source: Websters Dictionary (01 Mar 1998)