ligula 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.
ligula definition by American Heritage Dictionary
noun pl. lig·u·lae or lig·u·las
A strap-shaped or tonguelike structure, especially a mouth part in certain insects.
Origin: Latin, diminutive of lingua, tongue; see dṇghū- in Indo-European roots.