noun boil·er \ˈbi-lər\

: a large container in which water is heated to produce steam in an engine

Full Definition of BOILER

:  one that boils
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

First Known Use of BOILER

circa 1540

Rhymes with BOILER

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