any movable airfoil, as a rudder, flap, or aileron, for guiding or controlling an aircraft or missile in flight.
Words nearby control surface
Origin of control surface
First recorded in 1915–20
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2020
British Dictionary definitions for control surface
a movable surface, such as a rudder, elevator, aileron, etc, that controls an aircraft or rocket
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