#carrier  a rack attached to a vehicle; for carrying luggage or skis or the like
  supertype:  #rack  framework for holding objects
  subtype:  #bomb_rack  a device on an aircraft for carrying bombs
  subtype:  #luggage_carrier__luggagecarrier  carrier (as behind a bicycle seat) for luggage
  subtype:  #luggage_rack__luggagerack__roof_rack  carrier for holding luggage above the seats of a train or on top of a car
  subtype:  #ski_rack__skirack  a carrier for holding skis on top of a vehicle

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