Definition of A-team noun from the Oxford Advanced Learner's Dictionary

     

    A-team

     noun
    noun
    BrE
     
    ; NAmE
     
    [usually singular]
     
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  1. 1the best sports team in a school, club, etc.
  2. 2a group of the best workers, soldiers, etc.
  3. Word Origin 1970s: from sports terminology in which an organization's A-team is its best team.
See the Oxford Advanced American Dictionary entry: A-team