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air pocket

(not in technical use) a nearly vertical air current that can cause an aircraft to experience a sudden change in altitude, usually a decrease.
Also called air hole.
Origin of air pocket
1910-15 Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2015.
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Examples from the Web for air-pocket
Historical Examples
  • But of course I couldn't tell in the dark; and just afterwards I struck an air-pocket, and had a bit of trouble with the bus.

    Men, Women and Guns H. C. (Herman Cyril) McNeile
  • For perhaps ten seconds he hung thus, till the monoplane, rocking through an air-pocket, tilted violently.

    Billy Barcroft, R.N.A.S. Percy F. Westerman
British Dictionary definitions for air-pocket

air pocket

a localized region of low air density or a descending air current, causing an aircraft to suffer an abrupt decrease in height
any pocket of air that prevents the flow of a liquid or gas, as in a pipe
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition
© William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins
Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012
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