Massive wicket: dancing! (8)
I believe the answer is:
whopping
'massive' is the definition.
(thesaurus)
'wicket dancing' is the wordplay.
'wicket' becomes 'w'.
'dancing' becomes 'hopping' ().
'w'+'hopping'='WHOPPING'
(Other definitions for whopping that I've seen before include "Huge" , "Gigantic" , "Very large" , "Enormous" .)