Serpens 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.
an equatorial constellation split into two separate regions, (head) and (tail), on opposite sides of Ophiuchus
Serpens definition by American Heritage Dictionary
A constellation in the equatorial region of the northern sky, made up of two parts, Serpens Cauda, the “tail,” and Serpens Caput, the “head,” both near Hercules and Ophiuchus.
Origin: Latin Serpēns, from serpēns, serpent; see Serpent .