College of note, possibly (4)
I believe the answer is:
eton
'college' is the definition.
(Eton College, English private school)
'note possibly' is the wordplay.
'possibly' indicates an anagram.
'note' anagrammed gives 'ETON'.
'of' acts as a link.
(Other definitions for eton that I've seen before include "Public school founded by Henry VI" , "Collar - crop - jacket - school" , "Noted public school" , "Famous college" , "English college of note" .)