Literal result of picking the wrong key (4)
I believe the answer is:
typo
'literal' is the definition.
(I know that literal can be written as typo)
I can't explain the remainder of the clue.
Can you help me to learn more?
(Other definitions for typo that I've seen before include "Finger problem" , "Mistake in printed matter, in short" , "Character flaw" , "Spelling mistake" , "Thanks; good health!" .)