jacket

[ jak-it ]

/ ˈdʒæk ɪt /

SEE MORE SYNONYMS FOR jacket ON THESAURUS.COM

noun

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, especially 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.

verb (used with object)

to put a jacket on (someone or something).

Nearby words

jackdaw, jacked, jackeen, jackelyn, jackeroo, jacket, jackey, jackfish, jackfruit, jackhammer, jackie

Origin of jacket

1425–75; late Middle English jaket < Middle French ja(c)quet, equivalent to jaque jack⁴ + -et -et

Related forms

jack·et·ed, adjectivejack·et·less, adjectivejack·et·like, adjectiveun·der·jack·et, noun

un·jack·et·ed, adjective

Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019

Examples from the Web for jacket

I settle for a sweater and jacket and throw a tie in my briefcase just in case it turns out to be the prom.
Alfred Hitchcock’s Fade to Black: The Great Director’s Final Days|David Freeman|December 13, 2014|DAILY BEAST
Micah is 10 years old and he had a coat geared to the season, a Patagonia winter jacket with a hood.
The Wildly Peaceful, Human, Almost Boring, Ultimately Great New York City Protests for Eric Garner|Mike Barnicle|December 8, 2014|DAILY BEAST
The jacket and gloves were a precaution in the event the eaglet panicked, but there was little fuss as he tossed the net over her.
He Faces Jail for Rescuing Baby Eagles|Michael Daly|November 2, 2014|DAILY BEAST
On a hot day in Milwaukee once, Palmer quietly asked the assembled admirers, "Mind if I take off my jacket?"
Will the Real Jim Palmer Please Stand Up|Tom Boswell|September 27, 2014|DAILY BEAST

This week, President Obama disembarked from Air Force One while holding his jacket in his left hand and a coffee cup in his right.
Obama, the Coffee Salute, and the Dementia on the Right|Sally Kohn|September 25, 2014|DAILY BEAST
And he retained his hold of my jacket, giving directions to his men the while.
The Pilots of Pomona|Robert Leighton
The Pote finished his dishwashing and joined us, pulling on an old Tuxedo jacket.
The Trail of '98|Robert W. Service
Mrs. Lewis sewed, that afternoon, on his jacket, mending it up more neatly than ever before.
Tip Lewis and His Lamp|Pansy
Has a core of lead and tin composition inclosed in a jacket of cupro-nickel.
The Plattsburg Manual|O.O. Ellis and E.B. Garey
She pointed at his jacket tossed on a chair, a bit of his kerchief dangling from a pocket.
Wilderness of Spring|Edgar Pangborn

British Dictionary definitions for jacket

jacket

/ (ˈdʒækɪt) /

noun

a short coat, esp one that is hip-length and has a front opening and sleeves

something that resembles this or is designed to be worn around the upper part of the bodya life jacket

any exterior covering or casing, such as the insulating cover of a boiler

the part of the cylinder block of an internal-combustion engine that encloses the coolant

See dust jacket

the skin of a baked potato
(as modifier)jacket potatoes

a metal casing used in certain types of ammunition

US a cover to protect a gramophone recordBrit name: sleeve

mainly US a folder or envelope to hold documents

verb

(tr) to put a jacket on (someone or something)

Derived Forms

jacketed, adjectivejacket-like, adjective

Word Origin for jacket

C15: from Old French jaquet short jacket, from jacque peasant, from proper name Jacques James

Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012

Medicine definitions for jacket

jacket

[ jăk′ĭt ]

n.

A fixed bandage applied around the body to immobilize the spine.

An artificial crown of a tooth composed of fired porcelain or acrylic resin.