a short coat, in any of various forms, usually opening down the front.

something designed to be placed around the upper part of the body for a specific purpose other than use as clothing

a life jacket.

a protective outer covering.

the skin of a potato, esp. when it has been cooked.

book jacket.

the cover of a paperbound book, usually bearing an illustration.

a paper or cardboard envelope for protecting a phonograph record.

a metal casing, as the steel covering of a cannon, the steel cover around the core of a bullet, or the water jacket on certain types of machine guns.

a folded paper or open envelope containing an official document.

to put a jacket on (someone or something).

noun

case , casing , coat , envelope , folder , fur , hide , parka , pelt , sheath , skin , threads , tunic , wrapper , wrapping , fell , blazer , blouse , bolero , camisole , cardigan , cardigan jacket , chaqueta , cleading , combat , covering , denim , dinner , dolman , doublet , envelop , eton , garibaldi , grego , guernsey , habergeon , jerkin , jersey , jumper , pea-jacket sontag , peacoat , reefer , safari , shell , ski jacket , spencer , sweater , temiak (eskimo) , tuxedo , wammus , wampus , windbreaker , woolly