Gorgons, three sisters, Medusa, Euryale, and Stheino, with hissing serpents on their heads instead of hair, of whom Medusa, the only one that was mortal, had the power of turning into stone any one who looked on her. See Perseus.
Definition taken from The Nuttall Encyclopædia, edited by the Reverend James Wood (1907)
Gorgias * Gorham, George Cornelius