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Synonyms
jack·et (jăḱĭt)

[Middle English jaket, from Old French jaquet diminutive of jaque, short jacket, tunic, from jacques, nickname for French peasants (from the name Jacques; see jack), or from Old Catalan jaco (perhaps from Arabic šakk, mailcoat).]

noun 

  1. A short coat usually extending to the hips.
  2. An outer covering or casing, especially:
    1. The skin of a potato.
    2. The dust jacket of a book or phonograph record.
    3. An insulation covering for a steam pipe, wire, boiler, or similar part.
    4. An open envelope or folder for filing papers.
    5. The outer metal shell or case of a bullet.

transitive verb: -et·ed, -et·ing, -ets. 

To supply or cover with a jacket.

derivatives

jacḱet·ed
adjective