a vessel in which water is heated to generate steam, esp. for working a steam-engine (boiler, n. 2b).

ⓘ A fuel-burning appliance or installation used to produce hot water or steam and connected to pipework supplying a central heating system and…

An apparatus or device used for generating something, or in which something is generated. Frequently with prefixed modifying word.

a form of engine-boiler (see quot.).

the cylindrical flue-boiler invented by Smeaton.

a type of boiler of concave shape, used to heat a building, esp. a greenhouse.

a form of steam boiler consisting of one or more heated water cylinders lying side by side and connected by vertical pipes to a larger steam…

That vomits or causes to vomit.

a boiler in which water circulates through a large number of closely-spaced tubes surrounded by hot gases.

= feed-water-heater at feed-water, n.

a steam boiler having a cylindrical shell with one or more furnaces inside the lower part of it, the hot gases produced from combustion passing…

(see quot. 1888).

Applied to a boiler in respect to its power of generating steam.

= flasher, n. 6.

= flash generator n.

heat produced as the by-product of some process; waste-heat boiler, a boiler employing this.