proleg 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 the stubby limbs attached to the abdomen of certain insect larvae
Origin: pro- plush leg
proleg definition by American Heritage Dictionary
One of the stubby limbs on the abdominal segments of caterpillars and certain other insect larvae.