sky·writ·ing (sk??r??t?ng)n.1. The process of writing in the sky by releasing a visible vapor from an airplane.2. The letters or words so formed.sky?write? v.sky?writ?er n.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.skywriting (?ska??ra?t??) n1. (Aeronautics) the forming of words in the sky by the release of smoke or vapour from an aircraft2. (Aeronautics) the words so formed ?sky?writer nCollins English Dictionary ? Complete and Unabridged, 12th Edition 2014 © HarperCollins Publishers 1991, 1994, 1998, 2000, 2003, 2006, 2007, 2009, 2011, 2014sky?writ?ing (?ska??ra? t??) n. 1. the act or technique of writing against the sky with artificial smoke released from a maneuvering airplane. 2. the words, letters, designs, etc., so traced. [1920?25] sky?write`, v.i., v.t. -wrote, -writ?ten, -writ?ing. sky?writ`er, n. Random House Kernerman Webster’s College Dictionary, © 2010 K Dictionaries Ltd. Copyright 2005, 1997, 1991 by Random House, Inc. All rights reserved.