See you mention it (7)
I believe the answer is:
observe
'see' is the definition.
(I know that see is a more specific form of the action observe)
I can't explain the remainder of the clue.
Can you help me to learn more?
(Other definitions for observe that I've seen before include "Obverse (anag.)" , "Discern" , "Notice or conform to, rules say" , "Notice, perceive" , "monitor" .)