Lewis Short
(adjective) : Trājānus, i, m.
* Trajan, a Roman emperor, who reigned A.D. 98-118, proverbial for his justice and benevolence: Augusto felicior, Trajano melior,Eutr. 8, 5.—Hence, Trājānus, a, um, , of or belonging to Trajan: aqua,Front. Aquaed. 93: VIA,the Appian Way, restored by Trajan,Inscr. Grut. 199, 1.
Charlton T. Lewis, Charles Short, A Latin Dictionary