ventilator

noun

A device that circulates fresh air and expels stale or foul air.

noun

A machine that supplies oxygen or a mixture of oxygen and air, used in artificial respiration to control or assist breathing.

noun

One who or that which ventilates

noun

One who or that which brings some matter to public notice, as a speaker or a newspaper.

noun

A contrivance for effecting ventilation; especially, a contrivance or machine for drawing off or expelling foul or stagnant air from any place or apartment, or for introducing that which is fresh and pure.

noun

A device that circulates fresh air and expels stale or noxious air

noun

A respirator

noun

a device that facilitates breathing in cases of respiratory failure

noun

a device (such as a fan) that introduces fresh air or expels foul air