#plate  a sheet of metal or wood or glass or plastic
  supertype:  #flat_solid__sheet  a flat artifact that is thin relative to its length and width
  subtype:  #baffle_board__baffle  a flat plate that controls or directs the flow of fluid or energy
     subtype:  #diffusor__diffuser  baffle that distributes sound waves evenly
  subtype:  #cylinder_head  a detachable plate that covers the closed end of a cylinder chamber in a reciprocating engine or pump
  subtype:  #damper.plate  a movable iron plate that regulates the draft in a stove or chimney or furnace
  subtype:  #disk__disc  a thin flat circular plate
     subtype:  #acetate_disk__acetatedisk__phonograph_recording_disk  a disk coated with cellulose acetate
     subtype:  #brake_disk__brakedisk  the brake disk plate is fixed to the wheel; pressure is applied to it by the brake pads
     subtype:  #diaphragm  electro-acoustic transducer that vibrates to receive or produce sound waves
     subtype:  #discus.disk__saucer  a disk used in throwing competitions
     subtype:  #Frisbee  (trademark) a light plastic disk about 10 inches in diameter; sailed with a flip of the wrist for recreation or competition
     subtype:  #planchet__coin_blank  a flat metal disk ready for stamping as a coin
     subtype:  #hockey_puck__puck  a vulcanized rubber disk 3 inches in diameter that is used instead of a ball in ice hockey
     subtype:  #token  a metal or plastic disk that can be used (as a substitute for coins) in slot machines
        subtype:  #subway_token  a token that is used to pay for entry to the subway system
  subtype:  #engraving.plate  a block or plate that has been engraved
     subtype:  #copperplate  an engraving consisting of a smooth plate of copper that has been etched or engraved
     subtype:  #dry_point__drypoint  engraving consisting of an intaglio plate engraved with a sharp steel needle
     subtype:  #etching  an etched plate made with the use of acid
     subtype:  #halftone_engraving__halftone__photoengraving  an engraving used to reproduce an illustration
        subtype:  #heliogravure__gravure__photogravure  a halftone print produced by gravure
     subtype:  #line_block__linecut__line_engraving  engraving consisting of a block that has been etched or engraved
     subtype:  #engraved_steel_plate__steel_engraving__steelengraving  engraving on a steel plate
     subtype:  #wood_block__woodcut__wood_engraving  engraving consisting of a block of wood with a design cut into it; used to make prints
  subtype:  #escutcheon  (nautical) a plate on a ship's stern on which the name is inscribed
  subtype:  #fin_keel__finkeel  a metal plate projecting from the keel of a shallow vessel to give it greater lateral stability
     subtype:  #centerboard__centreboard__drop_keel__sliding_keel__slidingkeel  a retractable fin keel used on sailboats to prevent drifting to leeward
        subtype:  #daggerboard  a removable centerboard on a small sailboat that can be lowered into the water to serve as a keel
  subtype:  #fishplate  metal plate bolted along sides of two rails or beams
  subtype:  #gusset_plate__gusset  a metal plate used to strengthen a joist
  subtype:  #lamella  thin plate
  subtype:  #license_plate__licenseplate__numberplate  a plate mounted on the front and back of car and bearing the car's registration number
  subtype:  #L-plate  (British) a square plate bearing the letter L that is attached to both ends of a car to indicate that the driver is a learner
  subtype:  #nameplate  a plate bearing a name
     subtype:  #doorplate  a nameplate fastened to a door; indicates the person who works or lives there
  subtype:  #plate_iron__plateiron  a plate of iron
     subtype:  #boilerplate  thick plate iron used in the production of boilers
     subtype:  #sheet_iron__sheetiron  plate iron thinner than tank iron
     subtype:  #stovepipe_iron__stovepipeiron  plate iron that is thinner than tank iron
     subtype:  #tank_iron  plate iron that is thinner than boilerplate but thicker than sheet iron or stovepipe iron
  subtype:  #platen.plate  the flat plate of a printing press that presses the paper against the type
  subtype:  #pleximeter__plessimeter  a small thin metal plate held against the body and struck with a plexor in percussive examinations
  subtype:  #slide  flat rectangular plate (a piece of glass) on which specimens can be mounted for microscopic study
  subtype:  #tap.plate  a small metal plate that attaches to the toe or heel of a shoe (as in tap dancing)

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