What is "air hole"

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.

n. 1 A hole in any surface that allows air or other gases to pass, especially an opening in the surface of a frozen lake etc. 2 An air pocket. 3 The blowhole of a whale.

1. n. a local region of low pressure or descending air that causes a plane to lose height suddenly [syn: air pocket, pocket]

2. a hole that allows the passage of air