Gift sees expression of disapproval over note (4)
I believe the answer is:
boon
'gift' is the definition.
(thesaurus)
'expression of disapproval over note' is the wordplay.
'expression of disapproval' becomes 'boo' (I've seen this before).
'over' says to put letters next to each other.
'note' becomes 'n' (abbreviation).
'boo'+'n'='BOON'
'sees' is the link.
(Other definitions for boon that I've seen before include "Benefaction" , "Godsend" , "Something beneficial - a blessing" , "Blessing, favour" , "Favour, request" .)