#crossbar  long thin horizontal crosspiece between two vertical posts
  supertype:  #crosspiece  a transverse brace
  part of:  #goalpost  one of a pair of posts (usually joined by a crossbar) that are set up as a goal at each end of a playing field
     part of:  #goal.game_equipment  game equipment consisting of the place toward which players of a game try to advance a ball or puck in order to score points

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