Look at university for boy (3)
I believe the answer is:
lou
'boy' is the definition.
'look at university' is the wordplay.
'look' becomes 'lo'.
'at' says to put letters next to each other.
'university' becomes 'u'.
'lo'+'u'='LOU'
'for' is the link.
(Other definitions for lou that I've seen before include "man" , "-- Reed, singer" , "-- Costello, Abbott's partner" , "Male or female" , "--- Costello, US comic" .)