英语词源字典 - 在线词源网站

belle (n.)[belle 词源字典]: "beautiful woman well-dressed; reigning beauty," 1620s, from French belle, from Old French bele, from Latin bella, fem. of bellus "beautiful, fair" (see bene-).[belle etymology, belle origin, 英语词源]
regnant (adj.): "reigning, exercising authority," c. 1600, from Latin regnantem (nominative regnans) "reigning," present participle stem of regnare "to reign" (see reign). Adjective regnal (1610s) means "pertaining to a reign," especially in reference to the day or year a reign began.
reign (v.): "to hold or exercise sovereign power," late 13c., from Old French regner "rule, reign" (12c.), from Latin regnare "have royal power, be king, rule, reign," from regnum (see reign (n.)). Related: Reigned; reigning; regnal.