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
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Set in an alternate past during Japan's Meiji era, the world of Sparks of Tomorrow is totally reliant on steam power, with massive boilers constantly puffing away. K. Thor Jensen, PC Magazine, 3 July 2026 Contreras has always been an overheating boiler of a ballplayer, with a history of arguing with umpires, throwing bats and helmets, and willing to charge the mound over any slight, real or imagined. Steve Buckley, New York Times, 2 July 2026 During the excavation, archaeologists uncovered stone foundations, teacups, drinking glasses and evidence of the distillery's copper stills and boilers, which helped researchers reconstruct how the massive operation functioned. Andrea Margolis, FOXNews.com, 30 June 2026 The company stated that in cooperation with its partners, Naval Group is responsible for the production of this series of submarines, from design to shipbuilding, for manufacturing the main components of the nuclear boilers which are developed and produced with TechnicAtome. Prabhat Ranjan Mishra, Interesting Engineering, 28 June 2026 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 6 Jul. 2026.

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

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