boiler

noun

boil·​er ˈbȯi-lər 

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

As do the teachers who come to school early and stay late, the cafeteria workers laboring in front of gas stoves, and janitorial staff working in the basements with decades-old, oil-burning boilers. —Anya Kamenetz, New York Daily News, 3 June 2024

Emissions from vehicles, industrial boilers, chemical and power plants, and other sources chemically react with sunlight and create these dangerous elements. —Caralin Nunes, The Arizona Republic, 1 Apr. 2024

The grant funding is split between 10 Kraft Heinz locations across the U.S. The project will allow for a range of technologies including heat pumps, electric heaters, electric boilers and renewable energy storage. —Karl Schneider, The Indianapolis Star, 28 Mar. 2024

The cost of a new air-source heat pump, for instance, is around £10,000, compared with perhaps £3,000 for a new boiler – affordable only because a £7,500 grant is available in England. —The Week Staff, theweek, 3 Feb. 2024

Word History

First Known Use

circa 1540, in the meaning defined at sense 1

Phrases Containing boiler

• boiler room
• double boiler
• steam boiler

Kids Definition

boiler

noun

boil·​er ˈbȯi-lər 

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