ἐχιδνοκέφαλος
From LSJ
ἐν οἰκίᾳ τυφλῶν καὶ ὁ νυκτάλωψ ὀξυδερκής → even the day-blind is sharp-eyed in a blind house | among the blind, the one-eyed man is king
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.