An isolated space containing trapped air, as in bread dough or a collapsed mine shaft.
A localized atmospheric condition, such as a downdraft, that causes an aircraft to lose altitude abruptly.
A downdraft or, sometimes, an updraft that can cause an aircraft to change altitude suddenly.
A sharp drop in the price of a stock or a futures or option contract in response to unexpected negative news gaps. Often air pockets are indicated on a price chart by a discrepancy between the previous day’s closing price and the next day’s price.