σάνδιξ

From LSJ

ἵνα οὖν μηδ' ἐν τούτῳ δῷ αὐτοῖς λαβήν (Photius, Fragments on the Epistle to the Romans 483.26) → so that he doesn't give them even here a handle (= an opportunity for refutation)

Source

French (Bailly abrégé)

ικος (ἡ) :
c. σάνδυξ.

German (Pape)

ὁ, = σάνδυξ.