Jog round university to find fish (5)
I believe the answer is:
trout
'fish' is the definition.
(I know that trout is a type of food fish)
'jog round university' is the wordplay.
'jog' becomes 'trot' (synonyms).
'round' is an insertion indicator.
'university' becomes 'U' (abbreviation for university).
'trot' going around 'u' is 'TROUT'.
'to find' acts as a link.
(Other definitions for trout that I've seen before include "Swimmer" , "bad-tempered woman" , "Game fish related to salmon" , "Fish - old harridan" , "Performance by five players" .)