from The American Heritage® Dictionary of the English Language, 4th Edition
- n. A control surface on an aircraft wing functioning both as a flap and as an aileron.
from Wiktionary, Creative Commons Attribution/Share-Alike License
- n. An aircraft control surface at the trailing edge of a wing that acts as an aileron (controlling movement around the longitudinal axis) and a flap (changing the chord line of the wing, thus affecting the angle of attack).
flap + (ail)eron.(American Heritage® Dictionary of the English Language, Fourth Edition)
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