Lewis Short
Cythnŏs | -us, a, um | Cythnius (noun F) : or , , , = Κύθνος
* One of the Cyclades, now Thermia, Mel. 2, 7, 11; Plin. 4, 12, 22, § 66; Liv. 31, 15, 8; Ov. M. 5, 252; Tac. A. 3, 69; id. H. 2, 8.—Hence
* Adj., of Cythnos, Cythnian: Timanthes Cythnos,Quint. 2, 13, 13.
Charlton T. Lewis, Charles Short, A Latin Dictionary