dĭădēma

I. a royal head-dress, a diadem (for syn. cf.: infula, vitta, redimiculum), Cic. Phil. 2, 34, 85; 3, 5, 12; Quint. 9, 3, 61; Suet. Caes. 79; Hor. C. 2, 2, 21; Juv. 8, 259; Vulg. Apoc. 12, 3 al.