Lewis Short
(adjective) : vespĕrus, a, um, vespera
* Of or belonging to the evening, evening-: his horae rigandi matutina atque vespera,Plin. 19, 12, 60, § 183 (dub.; al. matutino atque vespera): tempus vesperum,Cael. Aur. Acut. 1, 15, 141; 1, 15, 151.
Charlton T. Lewis, Charles Short, A Latin Dictionary