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From The Collaborative International Dictionary of English v.0.48:
Ventilate \Ven"ti*late\, v. t. [imp. & p. p. Ventilated; p. pr. & vb. n. Ventilating.] [L. ventilatus, p. p. of ventilare to toss, brandish in the air, to fan, to winnow, from ventus wind; akin to E. wind. See Wind rushing air.] 1. To open and expose to the free passage of air; to supply with fresh air, and remove impure air from; to air; as, to ventilate a room; to ventilate a cellar; to ventilate a mine. [1913 Webster] 2. To provide with a vent, or escape, for air, gas, etc.; as, to ventilate a mold, or a water-wheel bucket. [1913 Webster] 3. To change or renew, as the air of a room. --Harvey. [1913 Webster] 4. To winnow; to fan; as, to ventilate wheat. [1913 Webster] 5. To sift and examine; to bring out, and subject to penetrating scrutiny; to expose to examination and discussion; as, to ventilate questions of policy. --Ayliffe. [1913 Webster] 6. To give vent to; to utter; to make public. [1913 Webster] Macaulay took occasion to ventilate one of those startling, but not very profound, paradoxes. --J. C. Shairp. [1913 Webster]