ξαώ

From LSJ

ὀδοῦσι καὶ ὄνυξι καὶ πάσῃ μηχανῇ → tooth and nail | tooth, fang, and claw | in every possible way | by hook or by crook

Source

German (Pape)

[Seite 275] Wurzel von ξαίνω, vgl. ξέω, ξύω, scabo, schaben.