Cerʹberus
.A grim, watchful keeper, house-porter, guardian, etc. Cerberus, according to Roman mythology, is the three-headed dog that keeps the entrance of the infernal regions. Herculës dragged the monster to earth, and then let him go again. (See Sop.)
⁂ Orpheus (2 syl.) lulled Cerberus to sleep with his lyre; and the Sibyl who conducted Ænēas through the Inferno, also threw the dog into a profound sleep with a cake seasoned with poppies and honey.