Result from Foreign Dictionaries (3 entries found)
From The Collaborative International Dictionary of English v.0.48 [gcide]:
Air hole \Air" hole`\ ([^a]r" h[=o]l`).
1. A hole to admit or discharge air; specifically, a spot in
the ice not frozen over.
[1913 Webster]
2. (Founding) A fault in a casting, produced by a bubble of
air; a blowhole.
[1913 Webster]
3. (A["e]ronautics) A local region in the atmosphere having a
downward movement and offering less than normal support
for the sustaining surfaces of a flying machine, causing
an airplane to drop suddenly. Same as {air pocket}.
[Webster 1913 Suppl.]
From The Collaborative International Dictionary of English v.0.48 [gcide]:
Air pocket \Air" pock"et\ (p[o^]k"[e^]t). (aeronautics)
A local region in the atmosphere having a downward movement
and offering less than normal support for the sustaining
surfaces of a flying machine, causing an airplane to drop
suddenly. Same as {air hole}.
[PJC.]
From WordNet (r) 3.0 (2006) [wn]:
air hole
n 1: a local region of low pressure or descending air that
causes a plane to lose height suddenly [syn: {air pocket},
{pocket}, {air hole}]
2: a hole that allows the passage of air
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