Antares 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.
a red, supergiant, binary, variable star, the brightest star in the constellation Scorpius: magnitude, 0.9 to 1.1
Origin: Classical Greek Antarēs ; from anti-, like plush Arēs, Classical Greek god of war: so named because of its color
Antares definition by American Heritage Dictionary
A giant red binary star, the brightest in the constellation Scorpio, about 424 light-years from Earth.
Origin: Greek Antarēs : anti-, rival of; see anti- + Arēs, Ares, the planet Mars.