Think about figures of speech that have to do with sight.
The blink of an eye.
Categories:
More Riddles
Hmmm….
It flows in abundance but moves nothing. To re...
Revelations
It reveals everything but only by its absence d...
Flying away
Whether it is available or full, there is never...
Room without windows
What kind of room has no windows or doors?
Deery
If there is a deer, dead centered in the middle...
Cupid
It keeps ticking, though it’s rarely measured.