Measure of intelligence at university, breaking silly rules to get drinks (8)
I believe the answer is:
liqueurs
'drinks' is the definition.
(liqueur is a kind of drink)
'measure of intelligence at university breaking silly rules' is the wordplay.
'measure of intelligence' becomes 'iq'.
'at' is a charade indicator (letters next to each other).
'university' becomes 'u'.
'breaking' indicates putting letters inside.
'silly' is an anagram indicator.
'iq'+'u'='iqu'
'rules' is an anagram of 'leurs'.
'iqu' placed into 'leurs' is 'LIQUEURS'.
'to get' is the link.
(Other definitions for liqueurs that I've seen before include "Strong sweet alcoholic spirits for after meals" , "Sweetened spirits" , "Strong, highly flavoured drinks" , "Tasty alcoholic post-dinner drinks" , "Sweet after-dinner alcoholic drinks" .)