Lewis Short
nīgrĭtĭa | nīgrĭtĭes, ēi (noun F) : and , , 1. niger
* Black color, blackness (post-Aug.): capilli,Plin. 29, 6, 34, § 109; 9, 38, 62, § 134. —Form nigrities, Cels. 8, 4, 19; 5, 20, 3 al.
Charlton T. Lewis, Charles Short, A Latin Dictionary