jack·et | \ˈja-kət \

Definition of jacket 

(Entry 1 of 2)

1a : a garment for the upper body usually having a front opening, collar, lapels, sleeves, and pockets

b : something worn or fastened around the body but not for use as clothing

2a(1) : the natural covering of an animal

(2) : the fur or wool of a mammal

b : the skin of a potato

3 : an outer covering or casing: such as

a(1) : a thermally nonconducting cover

(2) : a covering that encloses an intermediate space through which a temperature-controlling fluid circulates

(3) : a tough cold-worked metal casing that forms the outer shell of a built-up bullet

b(1) : a wrapper or open envelope for a document

(2) : an envelope for enclosing registered mail during delivery from one post office to another

c(1) : a detachable protective cover for a book

(2) : a paper or cardboard envelope for a phonograph record


jacketed; jacketing; jackets

Definition of jacket (Entry 2 of 2)

transitive verb

: to put a jacket on : enclose in or with a jacket

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Other Words from jacket


jacketless \-ləs \ adjective

Examples of jacket in a Sentence


a suit with a double-breasted jacket slip the art book into its jacket so it won't get dirty

Recent Examples on the Web: Noun

One view shows a man wearing a black jacket with a gray hood pulled over his head enter the bank’s utility room, which leads to a door that can only be opened from inside the bank if it was left unsecured, according to charging documents. Erika Butler, The Aegis, "Darlington man faces theft charge from bank where he worked, court date coming," 6 July 2018 Most of the collection was built around a commanding structured jacket with typical '80s Mugler exaggerated shoulders (which originally came from the '40s). Roxanne Robinson, The Hollywood Reporter, "Alexandre Vauthier Shows "Super Parisian" Couture Collection," 3 July 2018 There is an air of athleticism — one of the collection’s Sadja wraps in white is reminiscent of the the Lululemon zip up jacket Kerry Washington wore as Olivia Pope on Scandal. Elizabeth Wellington, Philly.com, "This sun-protective clothing line by a King of Prussia dermatologist is actually pretty cute | Elizabeth Wellington," 2 July 2018 Needless to say, many Americans were highly disturbed by the choice, and the jacket—which FLOTUS wore to board and disembark her plane at Andrews Air Force Base in Maryland—ignited a fierce debate online and across cable news. Perrie Samotin, Glamour, "A History of Melania Trump's Most Talked-About Fashion Moments," 22 June 2018 Traders on the New York Stock Exchange floor traditionally wear light, blazer-ish jackets with four pockets ideal for stashing stock chits and notepads. Jacob Gallagher, WSJ, "When It’s Super-Hot, This is Your Workwear Solution," 21 June 2018 Bieber, 24, wore a casual black shirt, basketball shorts and a black baseball cap, while Baldwin, 21, wore an oversized leather jacket with her hair in a neat braid. Alexia Fernandez, PEOPLE.com, "Justin Bieber and Hailey Baldwin Hold Hands Despite Keeping Their Relationship Status Under Wraps," 21 June 2018 The two-button cropped jacket was a new silhouette for the Duchess, who previously stepped out in an Alexander McQueen trouser suit for the Endeavour Fund Awards in February. Edward Barsamian, Vogue, "Meghan, Duchess of Sussex, Works the Pantsuit Like a Princess Dress," 11 July 2018 Kylie appears to be wearing a beige mini skirt that matches the jacket on the bottom, and a pair of thick, gold hoops to accessorize the whole outfit. Emma Sarran Webster, Teen Vogue, "Kylie Jenner Wore a Black Lace Bra as a Top," 3 June 2018

Recent Examples on the Web: Verb

Townes told reporters that Porter Moser, the checker-jacketed, square-jawed coach of the Ramblers, asked his players to keep their heads held high in his postgame speech. Jeff Greer, The Courier-Journal, "When the tears dried, Loyola realized its place in college basketball lore," 31 Mar. 2018 Restaurant kitchens offered him the chance to work with ingredients and equipment that weren’t available to him at home, like black truffles or a steam jacketed kettle. Nancy Miller, The Courier-Journal, "Simple and good flavors are trending in the Mesh kitchen. Try your hand at these recipes!," 19 Dec. 2017 The company is straight-jacketed by the government’s insistence on a financial return from the network, even though as a wholesaler NBN Co. can’t sell directly to the public and set the final price of a connection. Angus Whitley, Bloomberg.com, "Australia Has Slower Internet Than Kenya, Russia and Hungary," 4 Oct. 2017 These outspoken pals, known collectively as The Chauvinists, include a retired Army colonel, a French philosophy student, a leather-jacketed rowdy named Fast Eddie and an elderly fisherman. Christopher Arnott, courant.com, "One-Man Comedy Show 'Male Intellect' Appeals To Specific Audience," 25 Sep. 2017 The scuba-like little white dress was complete with a moto collar reminiscent of the biker jackets worn by stylish women all over the French capital. Edward Barsamian, Vogue, "Melania Trump and Brigitte Macron Have Entirely Opposite Takes on French Style in Paris," 13 July 2017

These example sentences are selected automatically from various online news sources to reflect current usage of the word 'jacket.' Views expressed in the examples do not represent the opinion of Merriam-Webster or its editors. Send us feedback.

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First Known Use of jacket


15th century, in the meaning defined at sense 1a


1856, in the meaning defined above

History and Etymology for jacket


Middle English jaket, from Anglo-French jackés, plural, diminutive of Middle French jaque short jacket, from jacques peasant, from the name Jacques James

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Phrases Related to jacket

jacket potato

sport jacket

sports jacket

Statistics for jacket

Last Updated

14 Oct 2018

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Time Traveler for jacket

The first known use of jacket was in the 15th century

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More Definitions for jacket


jack·et | \ˈja-kət \

Kids Definition of jacket

1 : a short coat

2 : an outer cover or casing a book jacket


jack·et | \ˈjak-ət \

Medical Definition of jacket 

1 : a rigid covering that envelops the upper body and provides support, correction, or restraint



Legal Definition of jacket 

: a standard insurance policy to which other coverage or exclusions may be attached

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Comments on jacket

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