Basilisk
.The king of serpents (Greek, basileus, a king), supposed to have the power of “looking any one dead on whom it fixed its eyes.” Hence Dryden makes Clytus say to Alexander, “Nay, frown not so; you cannot look me dead.” This creature is called a king from having on its head a mitre-shaped crest. Also called a cockatrice, and fabulously alleged to be hatched by a serpent from a cock’s egg.