Definition & Meaning of "cerberus"

What is "Cerberus"?

Cerberus is a mythical creature from Greek mythology, depicted as a three-headed dog that guards the entrance to the Underworld. Each of Cerberus’s heads represents different aspects of its nature, often including vigilance and ferocity. This fearsome guardian is tasked with preventing the dead from leaving the Underworld and the living from entering. Cerberus is commonly associated with the god Hades, who rules the Underworld, and appears in various myths and stories as a symbol of the boundary between life and death.