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Casca, ae, m., a Roman cognomen in the gens Servilia, Cic. Att. 13, 44, 3; 16, 15, 3; id. Phil. 13, 15, 31; 2, 11, 27; Suet. Caes. 82; cf. Varr. L. L. 7, § 28 Müll.