aileron

n. section of the wing that controls the stability of an aircraft

For the band with a similar name, see The AileronsAilerons are hinged control surfaces attached to the trailing edge of the wing of a fixed-wing aircraft. The ailerons are used to control the aircraft in roll. The two ailerons are interconnected so that one goes down when the other goes up: the downgoing aileron increases the lift on its wing while the upgoing aileron reduces the lift on the other wing, producing a rolling moment about the aircraft's longitudinal axis. The word aileron is French for "little wing."
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Noun
1. an airfoil that controls lateral motion
(hypernym) airfoil, aerofoil, control surface, surface
(part-holonym) wing

n. aileron, section of the wing that controls the stability of an aircraft; fin

n. aileron, section of the wing that controls the stability of an aircraft (Mechanics)