Hyacinthus 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.
Gr. Myth. a youth loved and accidentally slain by Apollo, who causes to grow from his blood a flower bearing the letters AI AI (a Greek cry of sorrow)
Origin: Classical Latin ; from Classical Greek Hyakinthos, literally , hyacinth
Hyacinthus definition by American Heritage Dictionary
noun Greek Mythology
A beautiful youth, loved but accidentally killed by Apollo, from whose blood Apollo caused the hyacinth to grow.