tube pan 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 deep, round pan with a hollow tube in the center, for baking cakes
tube pan definition by American Heritage Dictionary
A round pan with a hollow projection in the middle, used for baking or molding foods in the shape of a ring.