#rib  support resembling the rib of an animal
  supertype:  support.device  any device that bears the weight of another thing; "there was no place to attach supports for a shelf"
  subtype:  screw_thread  the raised helical rib going around a screw
  part of:  hull  the frame or body of ship
     part of:  vessel.craft__watercraft  a craft designed for water transportation
  part of:  umbrella  a lightweight handheld collapsible canopy
  part of:  wing.airfoil  one of the horizontal airfoils on either side of the fuselage of an airplane
     part of:  airplane__aeroplane__plane  an aircraft that has a fixed wing and is powered by propellers or jets; "the flight was delayed due to trouble with the airplane"

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