Definition of halfback noun from the Oxford Advanced American Dictionary

     

    halfback

     noun
    noun
    NAmE//ˈhæfbæk//
     
    (also half)
     
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  1. 1 [countable] one of the defending players in hockey or rugby whose position is between those who play at the front of a team and those who play at the back
  2. 2 (also tailback) [countable] one of the two offensive players in football whose position is behind the quarterback and beside the fullback
  3. 3(also tailback) [uncountable] the position a halfback plays at