#crossbar.bar  a horizontal bar that goes across something
  supertype:  bar.artifact  a rigid piece of metal or wood; usually used as a fastening or obstruction of weapon; "there were bars in the windows to prevent escape"
  subtype:  whiffletree__whippletree__swingletree  a crossbar that is attached to the traces of a draft horse and to the vehicle or implement that the horse is pulling

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