ἐχιδνοκέφαλος
From LSJ
Ὦ τύμβος, ὦ νυμφεῖον, ὦ κατασκαφὴς οἴκησις αἰείφρουρος, οἷ πορεύομαι πρὸς τοὺς ἐμαυτῆς → Tomb, bridal chamber, eternal prison in the caverned rock, whither I go to find mine own.
English (LSJ)
ον,
A snakeheaded, Sch.E.Ph.1136.
German (Pape)
[Seite 1126] natterköpfig, Schol. Eur. Phoen. 1136.
Greek (Liddell-Scott)
ἐχιδνοκέφᾰλος: -ον, ἔχων κεφαλὴν ἐχίδνης, Σχόλ. εἰς Εὐρ. Φοιν. 1136.