A frightening dramatic work, such as a book or film
A machine that removes heat from the working fluid in a refrigeration cycle
a heat exchanger between a coolant and a refrigerant, to transfer heat from the coolant loop into the refrigeration system
a machine that produces cold air, either for air conditioning, to prepare chilled foods etc.
A referee or adjudicator at a fight, wrestling match, duel, etc. who ensures fair play.
Someone who insistently advocates for something, especially for strict observance of a formal rule.