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Related to skyjacking: Airplane hijacking
tr.v. sky·jacked, sky·jack·ing, sky·jacks
To hijack (an aircraft).
American Heritage® Dictionary of the English Language, Fifth Edition. Copyright © 2016 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.
(Aeronautics) informal a situation in which someone commandeers an aircraft, usually at gunpoint during flight, forcing the pilot to fly somewhere other than to the scheduled destination
Collins English Dictionary – Complete and Unabridged, 12th Edition 2014 © HarperCollins Publishers 1991, 1994, 1998, 2000, 2003, 2006, 2007, 2009, 2011, 2014