Definition of aileron in English:


Line breaks: ail|eron
Pronunciation: /ˈeɪlərɒn


  • A hinged surface in the trailing edge of an aeroplane wing, used to control the roll of an aircraft about its longitudinal axis.
    More example sentences
    • Each wing has a single aileron surface on the trailing edge to control roll and two flaps to control lift and drag.
    • The other intuitive reaction is to attempt to roll the aircraft with ailerons to level the wings.
    • Put the palm of your hand against the bottom of the leading edge of the aileron at each hinge and push up.


early 20th century: from French, literally 'small wing', diminutive of aile, from Latin ala 'wing'.

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