Cerberus (sûrˈbərəs) [key], in Greek mythology, many-headed dog with a mane and a tail of snakes; offspring of Typhon and Echidna. He guarded the entrance of Hades. One of the 12 labors of Hercules was to capture him.
The Columbia Electronic Encyclopedia, 6th ed. Copyright © 2012, Columbia University Press. All rights reserved.