Lewis & Short

Cyănē, ēs, f., = Κυάνη, a fountain near Syracuse, Plin. 3, 8, 14, § 89; Ov. F. 4, 469; id. P. 2, 10, 26.
In fable, a nymph changed into this fountain for her grief at the loss of Proserpine, Ov. M. 5, 409 sq.; Sil. 14, 515; Claud. Rapt. Pros. 3, 245.