What does "control surface" mean?

A moveable surface attached to a machine such as an aircraft or submarine that can be used to control the machine's motion in roll, pitch or yaw.

What is a synonym for "control surface"?

Common synonyms include: aerofoil, aeroplane, aileron, airfoil, airplane, device control.

noun

noun ·Rare ·Advanced level

Noun

1
A moveable surface attached to a machine such as an aircraft or submarine that can be used to control the machine's motion in roll, pitch or yaw.
"Before flight, it is vital to ensure all control surfaces are clear of obstruction and can move smoothly and freely."
2
a device that provides reactive force when in motion relative to the surrounding air; can lift or control a plane in flight wordnet

"Before flight, it is vital to ensure all control surfaces are clear of obstruction and can move smoothly and freely."