spiculum 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.
noun pl. spicula
a spicule; esp., any of several spinelike organs found in lower animals, as the starfish
Origin: Classical Latin
spiculum definition by American Heritage Dictionary
noun pl. spic·u·la
A spicule or similar needlelike structure, such as a spine of an echinoderm or a copulatory organ in a nematode.
Origin: Latin spīculum, diminutive of spīca, point, ear of grain.