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

The 57-window house required significant upgrades, including plumbing, electrical systems, a boiler and the replacement of 27 windows. —Brendel Hightower, Detroit Free Press, 6 Sep. 2024

For the ‘no firebricks’ scenario, it was assumed that countries would obtain the heat for industrial processes from electric furnaces, heaters, boilers, and heat pumps, with batteries used to store electricity for those technologies. —New Atlas, 5 Aug. 2024

Heat pumps, biomass stoves and boilers have a separate annual credit worth up to $2,000. —Russ Wiles, The Arizona Republic, 22 Jan. 2024

Smaller boilers in new buildings must meet zero-emissions targets by 2026, and larger facilities in existing buildings have until 2033. —Cameron Pugh, The Christian Science Monitor, 5 Aug. 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