unassisted or unconstrained flight, as the flight of a rocket or missile without guidance or after fuel exhaustion or motor cutoff.
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Origin of free flight
First recorded in 1920–25
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019
British Dictionary definitions for free flight
the flight of a rocket, missile, etc, when its engine has ceased to produce thrust
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