Webster's New World College Dictionary Copyright © 2010 by Wiley Publishing, Inc., Cleveland, Ohio.
a complete roll made by an airplane around its longitudinal axis while it simultaneously completes one spiral revolution in the air, as a chamber of a revolver turning in relationship to its gun barrel
Used by arrangement with John Wiley & Sons, Inc.
nounThe American Heritage® Dictionary of the English Language, 4th edition Copyright © 2010 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.
A flight maneuver in which an airplane makes a complete rotation on its longitudinal axis while approximately maintaining its original direction.