Ἐχελίδαι
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)
French (Bailly abrégé)
ῶν (οἱ) :
Echélidæ, dème attique.
Étymologie: Ἔχελος.