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

Data centers’ voracious energy needs are setting off a power plant construction boom and delivering a one-two punch of new life to unions whose members also build and maintain boilers, ductwork, pipelines and other power infrastructure. —Marc Levy, Fortune, 2 May 2026

Asking a musician about their influences can elicit a boiler plate response revealing little about their mindset and motivations. —Andrew Gilbert, Mercury News, 1 May 2026

These include blending hydrogen with natural gas for use in pipelines, powering heavy-duty trucks, and using hydrogen in industrial boilers. —Sujita Sinha, Interesting Engineering, 27 Apr. 2026

With a firm hold, the landlady showed me how to switch on the boiler and wait for ten minutes until the hot water came. —Literary Hub, 27 Apr. 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