Long to have wild party after college (5)
I believe the answer is:
crave
'long' is the definition.
(thesaurus)
'wild party after college' is the wordplay.
'wild party' becomes 'rave' (a dance party).
'after' means one lot of letters go next to another.
'college' becomes 'c'.
'rave' after 'c' is 'CRAVE'.
'to have' acts as a link.
(Other definitions for crave that I've seen before include "Long for, desire" , "Feel a powerful desire for (something)" , "Pine" , "Desire strongly" , "Lust after" .)