ventilator

Etymology

ventilate + -or; cf. Latin ventilator.

noun

  1. A device that circulates fresh air and expels stale or noxious air.
  2. (medicine) A machine that moves breathable air into and out of the lungs of a patient who is unable to breathe sufficiently.
  3. (figurative) Some behaviour or happening that relieves a tense atmosphere or situation.
  4. (obsolete, slang) A play or an actor so bad as to empty the theater.

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