IPA: /ˈbɔɪlər/
KK: /ˈbɔɪlər/
A container used to heat water or other liquids, often found in heating systems or for cooking.
The plumber installed a new boiler to provide hot water for the house.
Boiler → The word originates from the Old French *boileor*, meaning a vessel for boiling. It refers to a device that heats water or other liquids to produce steam or hot water.
Think of a vessel that 'boils' water — that's why a boiler is a device that heats water.