boil·​er | \ ˈbȯi-lər How to pronounce boiler (audio) \

Definition of boiler

1 : one that boils
2a : a vessel used for boiling
b : the part of a steam generator in which water is converted into steam and which consists usually of metal shells and tubes
c : a tank in which water is heated or hot water is stored
d chiefly British : furnace

Examples of boiler in a Sentence

Recent Examples on the Web If your furnace or boiler is more than 15 years old, and your heat pump or air conditioner is more than 12 years old, consider replacing it with a new energy-efficient model. Kaylei Fear, Better Homes & Gardens, 15 Mar. 2022 Return the bowl to the double-boiler if the chocolate starts to seize up, or sit the bowl in a larger bowl of tepid water to keep it fluid. Washington Post, 1 Dec. 2021 The boiler exploded, killing Thomas and badly damaging the garage. Tess Williams, Anchorage Daily News, 5 May 2022 Even after the boiler is turned off, the already heated water is still circulating through the system, heating the house. Richard B. (ricky) Rood, The Conversation, 29 Mar. 2022 While still only an option for certain consumers, especially in the United States, oil prices hitting $200 per barrel might prompt customers to buy an electric car instead of a gas-guzzler, or replace an old boiler with a heat pump. Kate Aronoff, The New Republic, 24 Mar. 2022 The boiler was located in the north end of the basement of the building. Devi Shastri, Milwaukee Journal Sentinel, 19 Mar. 2022 The remnants of an old boiler lay in the center of the floor. Los Angeles Times, 19 Feb. 2022 The dorm's 400 students were evacuated around 10 p.m. and the probable source of the leak was identified by the fire department as a boiler in the north end of the basement of the building. Devi Shastri, Milwaukee Journal Sentinel, 2 Mar. 2022 See More

These example sentences are selected automatically from various online news sources to reflect current usage of the word 'boiler.' Views expressed in the examples do not represent the opinion of Merriam-Webster or its editors. Send us feedback.

First Known Use of boiler

circa 1540, in the meaning defined at sense 1

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Time Traveler for boiler

Time Traveler

The first known use of boiler was circa 1540

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Dictionary Entries Near boiler

boiled sweets


boiler compound

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Statistics for boiler

Last Updated

20 May 2022

Cite this Entry

“Boiler.” Dictionary, Merriam-Webster, Accessed 23 May. 2022.

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More Definitions for boiler


boil·​er | \ ˈbȯi-lər How to pronounce boiler (audio) \

Kids Definition of boiler

1 : a container in which something is boiled
2 : a tank heating and holding water
3 : a strong metal container used in making steam (as to heat buildings)

More from Merriam-Webster on boiler

Nglish: Translation of boiler for Spanish Speakers

Britannica English: Translation of boiler for Arabic Speakers Encyclopedia article about boiler


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