Lewis Short
(adjective) = δίβαφος: dĭbăphus, a, um, or us, um
* Double dyed (once with scarlet and then with purple): purpura,Plin. 9, 39, 63, § 137; 21, 8, 22, § 45.—Because the Roman magistrates wore garments striped with purple
* Trop.: dibaphus, i, f. ( = ἡ δίβαφος, sc. ἐσθής), the purple staterobe of a high magistrate: Curtius noster dibaphum cogitat, sed eum infector moratur,Cic. Fam. 2, 16 fin. (id. Att. 2, 9, 2, written as Greek).
Charlton T. Lewis, Charles Short, A Latin Dictionary