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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There’s also evidence that the ship’s engineers left the boilers on, shoveling coal into the furnaces to keep electricity running. Theresa Braine, New York Daily News, 14 Apr. 2025 Magellan's images indicate the Titanic's crew kept the boilers going as the ship was sinking, the BBC says. George Petras, USA Today, 11 Apr. 2025 Thirty-five engineers went down shoveling coal into the boilers to keep the deck lit where lifeboats were being launched and to keep the wireless room powered. Sean Kingsley, HollywoodReporter, 11 Apr. 2025 Magellan Limited/Atlantic Productions The Titanic Digital Twin shows the boilers in the hull at the breaking point of the ship. 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 21 Apr. 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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