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

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