ai·ler·on
noun/ˈeɪlərɒn/
/ˈeɪlərɑːn/
(specialist)- a part of the wing of a plane that moves up and down to control the plane’s balance
enlarge image（飞机的）副翼 Word Originearly 20th cent.: from French, literally ‘small wing’, diminutive of aile, from Latin ala ‘wing’.