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Meaning of jacket

jack•et

Pronunciation: ( jak'it), [key]
— n.
  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, esp. when it has been cooked.
  5. See
  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.
—v.t.
  1. to put a jacket on (someone or something).
Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease.
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