verb (used with object)

to put a jacket on (someone or something).

Nearby words

  1. jackdaw,
  2. jacked,
  3. jackeen,
  4. jackelyn,
  5. jackeroo,
  6. jackey,
  7. jackfish,
  8. jackfruit,
  9. jackhammer,
  10. jackie

Origin of jacket

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

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

Examples from the Web for jacket

British Dictionary definitions for jacket



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
  1. the skin of a baked potato
  2. (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


(tr) to put a jacket on (someone or something)
Derived Formsjacketed, 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

Word Origin and History for jacket



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

Medicine definitions for jacket




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