Exact historical dictionary sense
Royal in Webster's 1913 dictionary
The 1913 record labels royal as adjective. Its source-bounded etymology and selected historical definition appear below.
[OE. roial, riall, real, OF. roial. reial, F. royal, fr. L. regalis, fr. rex, regis, king. See Rich, and cf. regal, real a coin, Rial.]
Cross-verified historical senseIn Webster's Revised Unabridged Dictionary (1913), "royal" is labeled adjective. Its etymology is recorded as: "[OE. roial, riall, real, OF. roial. reial, F. royal, fr. L. regalis, fr. rex, regis, king. See Rich, and cf. regal, real a coin, Rial.]" The selected historical definition says: "Kingly; pertaining to the crown or the sovereign; suitable for a king or queen; regal; as, royal power or prerogative; royal domains; the royal family; royal state."