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

     

    anorak

     noun
    noun
    BrE BrE//ˈænəræk//
     
    ; NAmE NAmE//ˈænəræk//
     
     
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  1. 1 (especially British English) a short coat with a hood that is worn as protection against rain, wind and cold My Mum made me take my anorak in case it rained. hikers in anoraks and walking boots
  2. 2(British English, informal) a person who spends a lot of time learning facts or collecting things that most other people think are boring
  3. Word Origin 1920s: from Greenland Eskimo anoraq. Sense 2 dates from the 1980s and derives from the anoraks worn by trainspotters, regarded as typifying this kind of person.
See the Oxford Advanced American Dictionary entry: anorak