#shaft.rod  a long rod or pole (especially the handle of an implement or the body of a weapon like a spear or arrow)
  supertype:  rod  a long thin implement made of metal or wood
  subtype:  axle  a shaft on which a wheel rotates
     subtype:  dead_axle  an axle that carries a wheel but without power to drive it
        subtype:  axletree  a dead axle on a carriage or wagon that has terminal spindles on which the wheel revolve
           subtype:  axle_bar  an iron bar that serves as an axletree
     subtype:  journal.axle  the part of the axle contained by a bearing
     subtype:  live_axle__driving_axle__drivingaxle  the axle of a self-propelled vehicle that provides the driving power
  subtype:  thill  one of two shafts extending from the body of a cart or carriage on either side of the animal that pulls it

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