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English definition of “boiler”

boiler

noun [C] uk   /ˈbɔɪ.lər/ us    /-lɚ/
a device that heats water, especially to provide heating and hot water in a houseHeaters and burners the part of a steam engine where water is heated to provide powerTrains and parts of trains
(Definition of boiler from the Cambridge Advanced Learners Dictionary & Thesaurus © Cambridge University Press)
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