- a coat extending to the waist or hips, usually with long sleeves
- an outer coating or covering; specif.,
- dust jacket
- a cardboard holder for a phonograph record
- the metal casing of a bullet
- the insulating casing on a pipe or boiler
- Cooking the skin of a potato
- a folder or envelope for holding letters or documents
- short for sport jacket
Origin of jacketMiddle English jaket from Old French jaquette, diminutive of jaque from Spanish jaco from Arabic shakk
- to put a jacket, or coat, on
- to cover with a casing, wrapper, etc.
- A short coat usually extending to the hips.
- An outer covering or casing, especially:a. The skin of a potato.b. The dust jacket of a book or phonograph record.c. An insulation covering for a steam pipe, wire, boiler, or similar part.d. An open envelope or folder for filing papers.e. The outer metal shell or case of a bullet.
- A piece of jewelry or other ornament that attaches to an earring stud.
transitive verbjack·et·ed, jack·et·ing, jack·ets
Origin of jacketMiddle English jaket from Old French jaquet diminutive of jaque short jacket, tunic from jacques nickname for French peasants from the name Jacques ; see jack .
- A piece of clothing worn on the upper body outside a shirt or blouse, often waist length to thigh length.
- A piece of a person's suit, beside trousers and, sometimes, waistcoat ; coat (US)
- A removable or replaceable protective or insulating cover for an object (eg a book, hot water tank.)
- (slang) A police record.
- (military) In ordnance, a strengthening band surrounding and reinforcing the tube in which the charge is fired.
(third-person singular simple present jackets, present participle jacketing, simple past and past participle jacketed)
From Middle French jacquet, diminutive of Old French jaque.
jacket - Computer Definition
See cable jacket.
A plastic housing that contains a floppy disk. The 5.25" disk is built into a flexible jacket; the 3.5" disk uses a rigid jacket.