#steam_boiler__steamboiler__boiler  sealed vessel where water is converted to steam
  supertype:  vessel  an object used as a container (especially for liquids)
  subtype:  auxiliary_boiler  an extra boiler (as a ship's boiler that is used while the ship is in port)
  part:  steam_whistle
  part of:  heating_system  steam_engine
  member:  boilerplate  thick plate iron used in the production of boilers

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