air pocket

Definition of Air Pocket in English :

1. air hole, air pocket, pocket

a local region of low pressure or descending air that causes a plane to lose height suddenly

WordNet Lexical Database for English. Princeton University. 2010.

Air Pocket

noun

1.

a localized region of low air density or a descending air current, causing an aircraft to suffer an abrupt decrease in height

2.

any pocket of air that prevents the flow of a liquid or gas, as in a pipe

a downdraft or, sometimes, an updraft that can cause an aircraft to change altitude suddenly

n.

1. An isolated space containing trapped air, as in bread dough or a collapsed mine shaft.

2. A localized atmospheric condition, such as a downdraft, that causes an aircraft to lose altitude abruptly.