Boredom of nine wandering round university (5)
I believe the answer is:
ennui
'boredom' is the definition.
(I know that boredom can be written as ennui)
'nine wandering round university' is the wordplay.
'wandering' is an anagram indicator.
'round' indicates putting letters inside.
'university' becomes 'u' (abbreviation for university).
'nine' is an anagram of 'enni'.
'enni' enclosing 'u' is 'ENNUI'.
'of' is the link.
(Other definitions for ennui that I've seen before include "Boredom, languor" , "Lower interest rate" , "to make one list less when connected" , "Feeling when tired of life?" , "Boredom, listlessness" .)