What does aileron mean?
The definition of aileron
Ai”le*ron, n. [F., dim. of aile wing.]
A half gable, as at the end of a penthouse or of the aisle of a church.
2 (Aëronautics) A small plane or surface capable of being manipulated by the pilot of a flying machine to preserve or destroy lateral balance; a hinged wing tip; a lateral stabilizing or balancing plane.