ἰθύκυφος
From LSJ
εἰς δὲ θεοὺς ἀσεβείας τε καὶ εὐσεβείας καὶ γονέας καὶ αὐτόχειρος φόνου μείζους ἔτι τοὺς μισθοὺς διηγεῖτο → and he had still greater requitals to tell of piety and impiety towards the gods and parents and of self-slaughter
English (LSJ)
η, ον, of parts of the normal spine,
A frontally concave, Hp.Art.45 (ἰθυ-κῡφής, ές,Mochl.1); opp. ἰθύ-λορδος, η, ον (ος, ον Mochl.l.c.), frontally convex, ll. cc., cf. Gal.18(2).542.