aileron

siiveke The hinged part on the trailing edge of an airplane wing, used to control lateral turns.
A half gable, as at the end of a penthouse or of the aisle of a church.
puhekieltä fin (of some fish)
puhekieltä flipper (of penguins and other animals)
Aileron.
spoiler (of an automobile)
(l) (gloss)