A party creating a fuss (3)
I believe the answer is:
ado
'a fuss' is the definition.
('ado' can be a synonym of 'fuss')
'a party' is the wordplay.
'party' becomes 'do' (do is a kind of party).
'a'+'do'='ADO'
'creating' is the link.
(Other definitions for ado that I've seen before include "Pother" , "excitement" , "Nothing caused much around 1598" , "flapping" , "carry-on" .)