G0934
βασίλειος
kingly
βασίλειος, -ον (also -α, -ον; βασιλεύς), [in LXX; Exo.19:6, Deu.3:10 (מַמְלָכָה), Exo.23:22, Wis.18:15, 3Ma.3:28, 4Ma.3:8 * ;] royal: 1Pe.2:9 (LXX) (see Hort, in l.).† royal, regal, kingly;, metaphorically possessed of high prerogatives and distinction, 1Pet. 2:9; (AS)
Full Thayer's lexicon entry
βασίλειος — basíleios
βασίλειος (rarely βασιλεία), βασίλειον, royal, kingly, regal: 1Pe 2:9. As a substantive, τό βασίλειον (Xenophon, Cyril 2, 4, 3; Pro 18:19, the Sept.; Josephus, Antiquities 6, 12, 4), and much more often (from Herodotus 1, 30 down) in plural τά βασιλεία (the Sept. Est 1:9, etc.), the royal palace: Luk 7:25 (A. V. "kings courts).
1 occurrence