|1.||a short coat, esp one that is hip-length and has a front opening and sleeves|
|2.||something that resembles this or is designed to be worn around the upper part of the body: a life jacket|
|3.||any exterior covering or casing, such as the insulating cover of a boiler|
|4.||the part of the cylinder block of an internal-combustion engine that encloses the coolant|
|5.||See dust jacket|
|6.||a. the skin of a baked potato|
|b. (as modifier): jacket potatoes|
|7.||a metal casing used in certain types of ammunition|
|8.||(US) Brit name: sleeve a cover to protect a gramophone record|
|9.||chiefly (US) a folder or envelope to hold documents|
|10.||(tr) to put a jacket on (someone or something)|
|[C15: from Old French jaquet short jacket, from jacque peasant, from proper name Jacques James]|
jacket jack·et (jāk'ĭt)
A fixed bandage applied around the body to immobilize the spine.
An artificial crown of a tooth composed of fired porcelain or acrylic resin.