Cerberus:

(Gr. myth.) the three-headed dog at the entrance to Hades,whose capture was one ofHercules’ tasks（希腊神话）克尔柏洛斯，把守冥府的三头怪犬，活捉它是大力士赫拉克勒斯的神功之一。
△L.L.L.5.2.590(589): “Cerberus,that three-headed canus；”克尔柏洛斯，那条三头的狗。
△2H.Ⅳ.2.4.180 (167):“Nay,rath-er damn them with / King Cerberus，”(Pistol confusesthe three-headed dog with the ruler of hell.)不，还是让他们落入阎王克尔柏洛斯的地狱里去受苦。