boiler

noun

boil·​er ˈbȯi-lər How to pronounce boiler (audio)
1
: one that boils
2
a
: 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
Examples are automatically compiled from online sources to show current usage. Read More Opinions expressed in the examples do not represent those of Merriam-Webster or its editors. Send us feedback.
Through the program, some homeowners can save $2,000 on costs just to upgrade air source heat pumps, heat pump water heaters, and biomass stoves and boilers to eco-friendly options. Kate Nalepinski, MSNBC Newsweek, 6 May 2025 He was dressed in this cool boiler suit, combat boots, and wearing a beaning in the middle of Malta, just smoking a cigarette. Rafa Sales Ross, Variety, 29 Apr. 2025 The toxic gas is odorless and colorless, and can leak from boilers, pool or water heaters, gas grills, and other appliances. Cathy Nelson, Health, 11 Apr. 2025 The boilers show up as concave on the digital replica of Titanic, and one of the valves is in an open position, supporting those accounts. ArsTechnica, 10 Apr. 2025 See All Example Sentences for boiler

Word History

First Known Use

circa 1540, in the meaning defined at sense 1

Time Traveler
The first known use of boiler was circa 1540

Cite this Entry

“Boiler.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/boiler. Accessed 19 May. 2025.

Kids Definition

boiler

noun
boil·​er ˈbȯi-lər How to pronounce boiler (audio)
1
: a container in which something is boiled
2
: a strong metal container used in making steam
3
: a tank in which water is heated or hot water is stored

More from Merriam-Webster on boiler

Last Updated: - Updated example sentences
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