δισσόπους
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)
German (Pape)
[Seite 643] doppeltfüßig, p. bei Euseb.
Greek (Liddell-Scott)
δισσόπους: οδος, ὁ, ἡ, ἔχων δύο πόδας, Χρησμ. (Πορφύρ. ἐν Εὐσεβ. Ε. Π. 124Β. 201C).