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See more synonyms for boiler on Thesaurus.com
  1. 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.
  2. a vessel, as a kettle, for boiling or heating.
  3. British. a large tub in which laundry is boiled or sterilized.
  4. a tank in which water is heated and stored, as for supplying hot water.
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Origin of boiler

First recorded in 1530–40; boil1 + -er1
Related formsboil·er·less, adjective
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018

Related Words for boiler

heater, boiler, pot, steamer, cauldron, platitude, oven, microwave, kiln, cooker, stove, furnace, radiator, fastball, incinerator, pyre, burner, cinerarium, crematory, vessel

Examples from the Web for boiler

Contemporary Examples of boiler

Historical Examples of boiler

British Dictionary definitions for boiler


  1. 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
  2. a domestic device burning solid fuel, gas, or oil, to provide hot water, esp for central heating
  3. a large tub for boiling laundry
  4. a tough old chicken for cooking by boiling
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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

Word Origin and History for boiler


1540s, agent noun from boil (v.). Meaning "vessel for boiling" is from 1725; steam engine sense is from 1757.

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Online Etymology Dictionary, © 2010 Douglas Harper