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jacket

[jak-it] /ˈdʒæk ɪt/
noun
1.
a short coat, in any of various forms, usually opening down the front.
2.
something designed to be placed around the upper part of the body for a specific purpose other than use as clothing:
a life jacket.
3.
a protective outer covering.
4.
the skin of a potato, especially when it has been cooked.
6.
the cover of a paperbound book, usually bearing an illustration.
7.
a paper or cardboard envelope for protecting a phonograph record.
8.
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.
9.
a folded paper or open envelope containing an official document.
verb (used with object)
10.
to put a jacket on (someone or something).
Origin
late Middle English
1425-1475
1425-75; late Middle English jaket < Middle French ja(c)quet, equivalent to jaque jack3 + -et -et
Related forms
jacketed, adjective
jacketless, adjective
jacketlike, adjective
underjacket, noun
unjacketed, adjective
Dictionary.com Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2014.
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British Dictionary definitions for underjacket

jacket

/ˈdʒækɪt/
noun
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.
6.
  1. the skin of a baked potato
  2. (as modifier): jacket potatoes
7.
a metal casing used in certain types of ammunition
8.
(US) a cover to protect a gramophone record Brit name sleeve
9.
(mainly US) a folder or envelope to hold documents
verb
10.
(transitive) to put a jacket on (someone or something)
Derived Forms
jacketed, adjective
jacket-like, adjective
Word Origin
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
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Word Origin and History for underjacket

jacket

n.

mid-15c., "short garment for men," from Middle French jaquet "short coat with sleeves," diminutive of Old French jaque, a kind of tunic, probably from Jacque, the male proper name, also the generic name of a French peasant (see jacquerie), but possibly associated with jaque (de mailles) "short, tight-fitting coat," originally "coat of mail," from Spanish jaco, from Arabic shakk "breastplate." Iakke "a short, close-fitting stuffed or quilted tunic, often serving as a defensive garment" is attested in English from late 14c., and by c.1400 was being used for "woman's short tunic." Meaning "paper wrapper of a book" is first attested 1894.

Online Etymology Dictionary, © 2010 Douglas Harper
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underjacket in Medicine

jacket jack·et (jāk'ĭt)
n.

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

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

The American Heritage® Stedman's Medical Dictionary
Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.
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Slang definitions & phrases for underjacket

jacket

noun

A criminal record; rap sheet

Related Terms

dust someone's jacket, monkey jacket, yellow jacket

[1940s+ Police; fr the cardboard folder or jacket used to hold the papers]


The Dictionary of American Slang, Fourth Edition by Barbara Ann Kipfer, PhD. and Robert L. Chapman, Ph.D.
Copyright (C) 2007 by HarperCollins Publishers.
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