Visor (en. Viewfinder)

/biˈzor/

Slang Meanings

Referring to someone who is always watching or guarding.
That guy is a watcher; he's always seeing what we do.
Ese tipo es un visor, siempre está viendo lo que hacemos.
In some contexts, a visor may refer to a frame or security camera.
The establishment has several watchers to monitor the area.
El local tiene varios visores para monitorear la zona.