Definition of jacket in English:

jacket

Syllabification: jack·et
Pronunciation: /ˈjakit
 
/

noun

  • 1An outer garment extending either to the waist or the hips, typically having sleeves and a fastening down the front.
    More example sentences
    • Often featuring a snap front and drawstring waist, this jacket maybe lined or unlined.
    • The popular lengths for jackets this fall are waist length, three-quarter length and trench coat length.
    • I reached into the front pocket of my jacket and took out a small business card.
  • 1.1An outer covering, especially one placed around a tank or pipe to insulate it.
    More example sentences
    • If you have a conventional water heater, give it a wrap as well with an insulated jacket that will help prevent energy loss.
    • Bosch designed a thin inner liner of soft steel that sealed the gases in, its pressure load supported by a stout perforated steel jacket.
    • Similarly, a steel and concrete jacket was secured to the swing span central pier in 1936.
  • 1.2A metal casing for a bullet.
    More example sentences
    • I test fired the Robar 228 with a wide variety of full metal jacket and hollow-point loads to test for reliability.
    • The idea of an EFMJ is a bullet whose jacket is weakened from the inside so that it splits open on contact with a target.
    • In 1948, the Nosler Partition Bullet Co. formed to make bullet jackets turned out one at a time on a lathe.
  • 1.3The skin of a potato: potatoes cooked in their jackets
    More example sentences
    • All we ate every day was a piece of black bread and three potatoes cooked in their jackets.
    • What next, said the Herald, oranges with no peel, potatoes without jackets?
    • New season potatoes, baked in their jackets and dressed ever so slightly with olive oil are the best possible accompaniment to properly cooked burgers and a green salad.
  • 1.4The dust jacket of a book.
    More example sentences
    • You may not have heard of House Industries, but you will undoubtedly have seen their work, be it on book jackets, CD covers or in the typography of advertising.
    • A selection of books are on display with a summary of the story covering the book jacket.
    • The atmosphere is literary, with the walls covered in huge posters of book jackets of American literary masterpieces.
  • 1.5A record sleeve.
    More example sentences
    • While I gazed at walls decorated with faded record jackets, the owner enthralled me with his in-depth knowledge of this musical genre.
    • Record jackets of all types lined the walls and memorabilia from the rock and roll era filled the many shelves all around the establishment.
    • Nelly nodded looking over my shoulder at the titles on the jackets of the records.
  • 1.6A steel frame fixed to the seabed, forming the support structure of an oil production platform.

verb (jackets, jacketing, jacketed)

[with object] Back to top  
  • Cover with a jacket.
    More example sentences
    • While most bullets have been jacketed with copper-zinc alloy, a variety of other hard metals, including tungsten, have been used.
    • For cladding-pumped laser experiments, some preforms have been jacketed with a second quartz glass tube in order to increase the cladding-core relation.
    • Old stoves have been jacketed and furnaces put in. Artificial lighting systems have been installed.

Origin

late Middle English: from Old French jaquet, diminutive of jaque (see jack2).

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