Lewis & Short

Caprĕae, ārum, f., an island in the Tyrrhene Sea, near Campania, now Capri, Plin. 3, 6, 12, § 82; Verg. A. 7, 735; Ov. M. 15, 709; Sil. 8, 541; celebrated as the dwelling-place of the emperor Tiberius, Tac. A. 4, 67; 6, 1; 6, 2; 6, 10; Suet. Tib. 39; 40; 60; 62; 74; Juv. 10, 72; 10, 93; who was thence, and in derision of his wantonness, called Caprinēus, Suet. Tib. 43.
Hence, Ca-prĕensis, e, adj.: secessus, Suet. Tib. 43.