boiler

n. hot water heater

A boiler is a closed vessel in which water or other fluid is heated. The heated or vaporized fluid exits the boiler for use in various processes or heating applications.
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Noun
1. sealed vessel where water is converted to steam
(synonym) steam boiler
(hypernym) vessel
(hyponym) auxiliary boiler, donkey boiler
(part-holonym) heating system, heating plant, heating, heat
(member-meronym) boilerplate
(part-meronym) steam whistle
(derivation) boil
2. a metal pot for stewing or boiling; usually has a lid
(synonym) kettle
(hypernym) pot
(hyponym) teakettle
(derivation) boil

n. boiler, hot water heater

n. boiler, hot water heater