#cylinder.solid  a solid bounded by a cylindrical surface and two parallel planes (the bases)
  supertype:  solid.shape  a three-dimensional shape
  subtype:  roll.cylinder  anything rolled up in cylindrical form
     subtype:  bolt.roll  a roll of cloth or wallpaper of a definite length
     subtype:  rouleau  a roll of coins wrapped in paper
     subtype:  rouleau.roll  a roll of ribbon
  subtype:  roller.cylinder  a cylinder that revolves
     subtype:  garden_roller  heavy cast-iron cylinder used to flatten lawns
     subtype:  paint_roller__paintroller  a roller that has an absorbent surface used for spreading paint
     subtype:  platen  the roller on a typewriter against which the keys strike
     subtype:  sprocket  roller that has teeth on the rims to pull film or paper through
     subtype:  trundle  small wheel or roller
  subtype:  prayer_wheel  a cylinder with Tibetan Buddhist prayers written on it; each revolution counts as uttering prayers

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