Echidna, a fabulous monster that figures in the Greek mythology, half-woman, half-serpent, the mother of Cerberus, the Lernean Hydra, the Chimæra, the Sphinx, the Gorgons, the Nemean Lion, the vulture that gnawed the liver of Prometheus, &c.
Definition taken from The Nuttall Encyclopædia, edited by the Reverend James Wood (1907)
Ecgberht * Echo