First Known Use: 15th century
Dictionary
1jacket
noun jack·et \ˈja-kət\
Definition of JACKET
1
a : 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
2
a (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: 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
— jack·et·less \-ləs\ adjective
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Origin of JACKET
Middle English jaket, from Anglo-French jackés, plural, diminutive of Middle French jaque short jacket, from jacques peasant, from the name Jacques James
Related to JACKET
2jacket
verb
Definition of JACKET
transitive verb
: to put a jacket on : enclose in or with a jacket
First Known Use of JACKET
1856
JACKET[1] Defined for Kids
jacket
noun jack·et \ˈja-kət\
Definition of JACKET for Kids
1
: a short coat
2
: an outer cover or casing <a book jacket>
Medical Dictionary
jacket
noun jack·et \ˈjak-ət\
Medical Definition of JACKET
1
: a rigid covering that envelops the upper body and provides support, correction, or restraint
2
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