Ventilator
Pronunciation : Ven"ti*la`tor
Part of Speech : n.
Etymology : [Cf. F. ventilateur, L. ventilator a winnower.]
Definition : Defn: 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.
Source : Webster's Unabridged Dictionary, 1913