aileron

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noun ai·le·ron \ˈā-lə-ˌrän\

Definition of aileron

  1. :  a movable airfoil at the trailing edge of an airplane wing that is used for imparting a rolling motion especially in banking for turns — see airplane illustration

Origin and Etymology of aileron

French, from diminutive of aile wing — more at aisle


First Known Use: 1909


AILERON Defined for English Language Learners

aileron

play
noun ai·le·ron \ˈā-lə-ˌrän\

Definition of aileron for English Language Learners

  • : a part of an airplane wing that can be moved up or down to cause the airplane to turn


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