lobefin 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.
any of a subclass (Sarcopterygii) of bony fishes having thick, limblike, paired fins, including the lungfishes and the coelacanth
lobefin definition by American Heritage Dictionary
See lobe-finned fish.