Part of speech: noun

An opening for supplying fresh air.

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Usage examples "ventilator":

  1. I stand under the ventilator- it is cooler- and I watch them toil. - "An Ocean Tramp", William McFee.
  2. Even with the best of knowledge, the air is hard to regulate, and the very principle that gives the furnace its standing as a ventilator must prevent it from being a perfect heater. - "The Complete Home", Various.
  3. A ventilator screen had been inserted to permit free circulation of outside air. - "The Cry at Midnight", Mildred A. Wirt.