Aileron
Pronunciation : Ai"le*ron
Part of Speech : n. [F.
Definition : 1.
Defn: A half gable, as at the end of a penthouse or of the aisle of a church.
2. (A?ronautics) 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.
Source : Webster's Unabridged Dictionary, 1913