What is another word for aileron?
Pronunciation: [ˈe͡ɪləɹən] (IPA) 
An aileron is a type of control surface that is typically found on airplanes. It is a moving flap on the trailing edge of the wings which are used to control the aircraft's roll. However, there are various synonyms used for the word aileron. The most common alternative name is the wing flap, which is quite self-explanatory. It can also be referred to as the airbrake or sloped surface, depending on context. Another synonym is the differential control surface, which may confuse non-pilots, as it is a technical name. Lastly, there is the term spoiler or spoiler aileron. This name refers to the function of the control surface, which can spoil the lift in a part of the wing, causing roll in that direction.
