- a room in a building, ship, etc., that houses one or more steam boilers.
- Slang.
- a place where illicit brokers engage in high-pressure selling, over the telephone, of securities of a highly speculative nature or of dubious value.
- any room or business where salespeople, bill collectors, solicitors for charitable donations, etc., conduct an intensive telephone campaign, especially in a fast-talking or intimidating manner.
- any room in a building (often in the basement) that contains a boiler for central heating, etc
- the part of a steam ship that houses the boilers and furnaces
- the room or department in which the real work of an organization goes on unseen
- (chiefly US) an office used by a team of telephone salespeople, esp of stocks and shares, operating under high pressure
- a fraudulent scheme in which investors are encouraged to buy non-existent, worthless, or over-priced shares
- (as modifier)
