Noon, as it were? Correct (5)
I believe the answer is:
amend
'correct' is the definition.
(amending is a kind of correcting)
I don't understand the remainder of the clue.
Can you help me to learn more?
(Other definitions for amend that I've seen before include "Put right" , "Make corrections to (eg, document)" , "Make small changes to" , "Correct (one's ways)" , "Change, alter" .)