Lewis Short
vīsum (noun N) : video
* Something seen, !*? sight, appearance, vision.
* In gen.: visa somniorum,Cic. Tusc. 1, 41, 97: talia visa,Prop. 2, 26 (3, 21), 20: dic age ... visa quid ista ferant,Ov. Am. 3, 5, 32: turpia,Prop. 2, 6, 28.
* In partic., a transl. of the Gr. φαντασία, an impression made by some external object upon the senses, an image, Cic. Ac. 1, 11, 40; 2, 6, 18; 2, 24, 77.
Charlton T. Lewis, Charles Short, A Latin Dictionary