radiator

Noun
  1. is a type of: natural object - an object occurring naturally; not made by man
    subtypes: radio source - an object that radiates radio waves
  2. is a type of: heater, warmer - device that heats water or supplies warmth to a room
    is a part of: heat, heating, heating plant, heating system - utility to warm a building
  3. is a type of: mechanism - device consisting of a piece of machinery; has moving parts that perform some function
    has: radiator cap - cap on the opening in the top of a radiator through which a coolant liquid can be added
    is a part of: cooling system, engine cooling system - equipment in a motor vehicle that cools the engine

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