The palindrome for look through is peep.
peep
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peep
The one-word palindrome that best fits that definition would be peep.
Make a small hole in a window cover and look at the opposite wall. ... when some of the rays reflected from a bright subject pass through a small hole in ... the creation of an inverted image formed by light rays passing through a pinhole.
peep
You look through a hole in the fence to watch a Baseball game.
Peep hole
The palindrome for "look for information" is "noitamrof kool."