air well

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Noun1.air well - a shaft for ventilationair well - a shaft for ventilation    
shaft - a long vertical passage sunk into the earth, as for a mine or tunnel
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References in periodicals archive ?
To a question how the company derive the idea, he said the concept of drawing water from air has been around for centuries since air wells in the deserts of the Middle East.
Millet Boulevard was closed to traffic on the direction of Topkapy district since the flames rising from entrance and air wells. Vehicle passing were not permitted on link roads which crossing in front of the Bazaar.
They do not need to sleep with air-conditioning most nights of the year because of the breezes wafting in from the golf course - a feature maximized even for those without golf course views by the numerous sectional air wells that naturally ventilate the building.