Webster's Dictionary 
(n.) A brownish purple pigment, obtained by the action of some compounds of tin upon certain salts of gold. It is used in painting and staining porcelain and glass to give a beautiful purple color. Commonly called Purple of Cassius.
Cyclopedia of Biblical, Theological and Ecclesiastical Literature 
is the name of several men in early Christian records or legends':
1. Bishop of Tyre, who in the year 198 attended the synod held at Caesarea, under the presidency of Theophilus, bishop of that city, and Narcissus, of Jerusalem, to settle the paschal controversy (Euseb. H. E . s.v. 25).
2. Saint, of Auvergne, about the time of Crocus, king of the Alemanni (probably A.D. 260), was found by Victorinus, the officer of the pagan priest, in a village called the village of the Christians. Victorinus is said to have been so touched by his preaching and miracles that he became a Christian and a miracle-worker himself, and the two were martyred together, May 15. See Acta Sanctorum, May, 3, 454.
3. Numidian bishop addressed in Cyprian, Epist. 70, and speaks twenty- second: in Sent. Epp. Syn. Carth. as bishop of Macomades, near Cirta.
4. A jailer at Byzantium, who kept Acacius in custody in A.D. 306, and testified that he had heard from the fellow-prisoners, and seen' with his own eyes, that many splendid soldiers, advocates, and physicians attended on him in his cell, but disappeared immediately when the door was unlocked. le was flogged for the assertion, but persisted in it, and offered to die for it, according to Simeon Metaphrastes.
5. Martyr at Bonn, Oct. 10, along with St. Gergon, according to Usuard's Mart.
6. Bishop of Narni, said to have freed the sword bearer of Totila from a devil by signing him with the cross. He is commemorated on June 29.