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 Greek Revival-style apartment house has been vacant since 2017, when all of its tenants left, reportedly due to a broken boiler that was never repaired. — Jc Reindl, Freep.com, 11 Sep. 2026

Story of the steamboat Washoe The Washoe was a 385-ton side-wheel paddleboat with four 32-foot-long iron boilers set on the deck, the Deadliest American Disasters site said. — Don Sweeney, Sacbee.com, 5 Sep. 2026

In an equipment room next to the bathing complex, the archaeologists found a furnace that would have been used to heat the floors of the building, as well as remnants of a boiler to heat the water used. — Andy Battaglia, ARTnews.com, 4 Sep. 2026

Here, the classical beauty of the Roman statues resonates with the looming grandeur of turbines and boilers that powered industrial modernity. — Luisa Zargani, Footwear News, 1 Sep. 2026

Word History

First Known Use

circa 1540, in the meaning defined at sense 1

Phrases Containing boiler

• boiler room
• double boiler
• steam boiler

Rhymes for boiler

• broiler
• oiler
• spoiler
• toiler
• reboiler

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