Air" hole` (hOl`).


A hole to admit or discharge air; specifically, a spot in the ice not frozen over.

2. (Founding)

A fault in a casting, produced by a bubble of air; a blowhole.


© Webster 1913

Air hole. (Aëronautics)

A local region in the atmosphere having a downward movement and offering less than normal support for the sustaining surfaces of a flying machine.


© Webster 1913

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