Dictionary

boiler room

noun

: a room with equipment for heating a building or ship : a room in which a boiler is located

: a room with many telephones that are used by people who call strangers and use dishonest or forceful methods to try to sell them something

Full Definition of BOILER ROOM

1
:  a room in which a boiler is located
2
:  a room equipped with telephones used for making high-pressure usually fraudulent sales pitches
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First Known Use of BOILER ROOM

1903

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