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Meaning of aileron

ai•ler•on

Pronunciation: (ā'lu-ron"), [key]
— n.
  1. a movable surface, usually near the trailing edge of a wing, that controls the roll of the airframe or effects maneuvers, as banks and the like.
  2. a wall at the end of a roof with a single slope, as that of a church aisle.
Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease.
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