The saying is: "Out of sight, out of mind." It simply means, what you can't see you also won't think about.
"In plain sight" is referring to something being in front of you without any type of obstructions blocking sight of it.
Sight
1 definition - To be afraid, disraught by the sight of blood.
to perceive by the sight or some other sense or by intellect; to distinguish mentally; recognize as distinct or different
The adjective is spelled "on-site" (on the premises).The prepositional phrase meaning when seen is "on sight." (e.g. shoot on sight)
This is entertainment that completely immerses the participant. It might include all of the senses such as sound, feel, and sight.
The word meaning "ability to see" is "sight".The word meaning "a place of land" is "site".The word meaning "to mention" is "cite".
it is to disappear from sight.
"In plain sight" is referring to something being in front of you without any type of obstructions blocking sight of it.
hidden
Sight
Vision (when sight is a noun). My sight/vision is improving. Spot (when sight is an adjective). I sighted/spotted a strange blue bug.
It means"Dear To Sight"
Something that affects a viewer with strong emotions is said to be a 'a sight to stir blood'
fight
Your name means sight.
Emerge is moving in or out of way and to come into sight.