1. A device that heats water by burning fuel for use in a heating system
   "heat pumps are replacing inefficient boilers"
    
2. Sealed vessel where water is converted to steam
   "The old factory still used a steam boiler for heating";
   - steam boiler
    
3. A metal pot for stewing or boiling; usually has a lid
   "The large boiler was used to prepare soup for the entire camp";
   - kettle

Derived forms: boilers

Type of: pot, vessel

Part of: heat, heating, heating plant, heating system, steam engine

Encyclopedia: Boiler