[ boi-ler ]
/ ˈbɔɪ lər /


a closed vessel or arrangement of vessels and tubes, together with a furnace or other heat source, in which steam or other vapor is generated from water to drive turbines or engines, supply heat, process certain materials, etc.Compare fire-tube boiler, water-tube boiler.
a vessel, as a kettle, for boiling or heating.
British. a large tub in which laundry is boiled or sterilized.
a tank in which water is heated and stored, as for supplying hot water.

Origin of boiler

First recorded in 1530–40; boil1 + -er1


boil·er·less, adjective Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019

Examples from the Web for boiler

British Dictionary definitions for boiler

/ (ˈbɔɪlə) /


a closed vessel or arrangement of enclosed tubes in which water is heated to supply steam to drive an engine or turbine or provide heat
a domestic device burning solid fuel, gas, or oil, to provide hot water, esp for central heating
a large tub for boiling laundry
a tough old chicken for cooking by boiling
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012