Cherishes a note about son (6)
I believe the answer is:
adores
'cherishes' is the definition.
(I've seen this in another clue)
'a note about son' is the wordplay.
'note about' becomes 'dore' (I am not sure about this - if you are sure you should give a lot more credence to this answer).
'son' becomes 's' (genealogical abbreviation for son).
'a'+'dore'+'s'='ADORES'
(Other definitions for adores that I've seen before include "Loves a lot" , "Idolises" , "is lover" , "Soared (anag.)" , "Loves; reveres" .)