chiller UK /ˈt͡ʃɪləː/US /ˈt͡ʃɪlɚ/ noun5 •Something that chills •a machine that produces cold air, either for air conditioning, to prepare chilled foods etc. •a heat exchanger between a coolant and a refrigerant, to transfer heat from the coolant loop into the refrigeration system •A machine that removes heat from the working fluid in a refrigeration cycle •A frightening dramatic work, such as a book or film formschillers