Definition of jumper noun from the Oxford Advanced Learner's Dictionary

     

    jumper

     noun
    noun
    BrE BrE//ˈdʒʌmpə(r)//
     
    ; NAmE NAmE//ˈdʒʌmpər//
     
    Clothes
     
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  1. 1 (British English) a knitted piece of clothing made of wool or cotton for the upper part of the body, with long sleeves and no buttons a woolly jumper See related entries: Clothes
  2. 2 (North American English) = pinafore See related entries: Clothes
  3. 3a person, an animal or an insect that jumps He's a good jumper.
  4. Word Originsenses 1 to 2 mid 19th cent. (originally meaning a loose jacket worn by sailors): probably from dialect jump ‘short coat’, perhaps from Scots jupe ‘a man's ’(later also a woman's) ‘loose jacket or tunic’, via Old French from Arabic jubba. Compare with jibba.
See the Oxford Advanced American Dictionary entry: jumper