ἄρσακες
Could not find Ἀρσάκειον in Logeion dictionaries.
Ἀρσάκειον Proper-name adjective: neuter nominative singular, Proper-name adjective: neuter accusative singular, Proper-name adjective: masculine accusative singular of Ἀρσάκειος
ἄρσακες· οἱ βασιλεῖς Περσῶν, Hsch.