/ ˈvjuːə(r); NAmE / noun
1.
a person watching television :
The programme attracted millions of viewers.
2.
a person who looks at or considers sth :
Some of her art is intended to shock the viewer.
viewers of the current political scene
➡ note at witness
3.
a device for looking at slides (= photographs on special film) , for example a small box with a light in it