ἱρωσύνη
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 (LSJ)
ἡ, Ion. for ἱερωσύνη,
A priesthood, v.l. in Hdt.4.161.