Feast I prepared for carnival (6)
I believe the answer is:
fiesta
'carnival' is the definition.
(thesaurus)
'feast i prepared' is the wordplay.
'prepared' indicates anagramming the letters.
'feast'+'i'='feasti'
'feasti' with letters rearranged gives 'FIESTA'.
'for' is the link.
(Other definitions for fiesta that I've seen before include "Public celebration in Spain" , "Religious festival in Spain" , "Feast day" , "Festivity, celebration" , "foreign holiday" .)