Lewis Short
Graeae (noun F) : Γραῖαι (old women)
* Daughters of Phorcus (hence Phorcydes) and Ceto, sisters and guardians of the Gorgons, gray-haired from their birth, having but one eye and one tooth among them, Hyg. praef. p. 7 Munck.
Charlton T. Lewis, Charles Short, A Latin Dictionary