βασιλικός, -ή, -όν (βασιλεύς),

[in LXX for מֶלֶךְ and its cognates ;]

royal, belonging to a king: χώρα, Act 12:20; ἐσθής, Act.12:21; νόμος β. a supreme law, "a law which governs other laws and so has a specially regal character" (Hort), or because made by a king (LAE, p. 3673), Jas.2:8; τις, one in the service of a king, a courtier, Jhn.4:46, 49 (WH, mg. βασιλίσκος).†

(AS)

royal; belonging to a king; a supreme law; one in the service of a king; a courtier