angle iron 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 piece of structural iron or steel in the form of an angle; esp., such a piece in a right angle, used for joining or reinforcing two beams, girders, etc.
angle iron definition by American Heritage Dictionary
A length of steel or iron bent at a right angle along its long dimension, used as a support or structural framework.