(Φαρμάκεια), the nymph of a well with poisonous powers, near the river Hissus, in Attica; she is described as a playmate of Oreithyia (Plat. Phaed. p. 229c.; Tinaeus, Ixr. Plat. s.v.).
[L.S]A Dictionary of Greek and Roman biography and mythology
Smith, William
A Dictionary of Greek and Roman biography and mythology. William Smith, LLD, ed. 1890