Cerberus, the three-headed or three-throated monster that guarded the entrance to the nether world of Pluto, could be soothed by music, and tempted by honey, only Hercules overcame him by sheer strength, dragging him by neck and crop to the upper world.
Definition taken from The Nuttall Encyclopædia, edited by the Reverend James Wood (1907)
Ceram` * Ceres