boiler room
noun
1- a room in a building (typically in the basement) or a compartment in a ship containing a boiler and related heating equipment（建筑物或船舱的）锅炉房。
1.1
- chiefly N. Amer. a room used for intensive telephone selling〈主北美〉（通过电话进行密集销售的）电话交易所：
as modifier boiler-room stock salesmen.电话交易所股票交易员。