- Sweepback is the backward angle of the front portion an airplane's wing.
An example of a sweepback is the slant of an airplane wing or a whale fin.
sweepback definition by Webster's New World
Webster's New World College Dictionary Copyright © 2010 by Wiley Publishing, Inc., Cleveland, Ohio. Used by arrangement with John Wiley & Sons, Inc.
- a backward slant of an airfoil, esp. of a wing
- the angle formed by some reference line along an airplane wing and the lateral axis of the airplane
sweepback definition by American Heritage Dictionary
The backward slant of the leading edge of an airfoil.