chiller

plural chillers

1. Something that chills
   1. a machine that produces cold air, either for air conditioning, to prepare chilled foods etc.
   2. a heat exchanger between a coolant and a refrigerant, to transfer heat from the coolant loop into the refrigeration system
   3. A machine that removes heat from the working fluid in a refrigeration cycle
2. A frightening dramatic work, such as a book or film

1. comparativecomparative form of chill: more chill

   With the setting of the sun a strong breeze, every blast of which was chiller and chiller, had begun to blow, rustling with a low continuous hum . . .

   1844, Chambers's Edinburgh Journal