χῶμα ἔχουν πρὸς τὴν πόλιν
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)
English > Greek (Woodhouse Quotes Reversed)
they piled a bank of earth against the city, they proceeded to throw up an embankment against the city