#roof  a protective covering that covers or forms the top of a building
  supertype:  #protective_cover__protective_covering__protection  a covering that is intend to protect from damage or injury; "they had no protection from the fallout"; "wax provided protection for the floors"
  part:  #eaves  #roof_peak
  part of:  #edifice
  subtype:  #curb_roof  a roof with two or more slopes on each side of the ridge
     subtype:  #mansard_roof__mansardroof__mansard  a hip roof having two slopes on each side
        subtype:  #French_roof  a mansard roof with sides that are nearly perpendicular
  subtype:  #dome  a hemispherical roof
     subtype:  #astrodome  a transparent dome on top of an airplane where the navigator can make celestial observations
     subtype:  #cupola  a roof in the form of a dome
     subtype:  #geodesic_dome  a lightweight dome constructed of interlocking polygons; invented by R. Buckminster Fuller
     subtype:  #onion_dome__oniondome  a dome that is shaped like a bulb; characteristic of Russian and Byzantine church architecture
     subtype:  #pressure_dome  a dome-shaped building that is pressurized
     subtype:  #whispering_gallery__whispering_dome  a space beneath a dome or arch in which sounds produced at certain points are clearly audible at certain distant points
  subtype:  #gable_roof__gableroof__saddle_roof__saddleback__saddleback_roof  a double sloping roof with a ridge and gables at each end
     subtype:  #gambrel_roof__gambrelroof  a gable roof with two slopes on each side and the lower slope being steeper
  subtype:  #hip_roof__hiproof  a roof having sloping ends as well as sloping sides
  subtype:  #housetop  the roof of a house; "shout it from the housetops"
  subtype:  #slate_roof__slateroof  a roof covered with slate
  subtype:  #sunroof__sunshine-roof  an automobile roof having a sliding or raisable panel: "`sunshine-roof' is a British term for `sunroof'"
  subtype:  #thatched_roof__thatch  a house roof made with a plant material (as straw)
  subtype:  #tile_roof  a roof made of fired clay tiles
  subtype:  #vault  an arched brick or stone ceiling or roof
     subtype:  #barrel_vault  the simplest form of vault; a single continuous arch
     subtype:  #groined_vault__groinedvault  two barrel vaults intersecting at right angles
     subtype:  #ribbed_vault  vault that resembles a groined vault but has ribbed arches

No statement uses or specializes #roof; click here to add one.