Notice pal going wild at club? (7)
I believe the answer is:
placard
'notice' is the definition.
(I know that notice can be written as placard)
'pal going wild at club?' is the wordplay.
'going wild' indicates an anagram.
'at' is a charade indicator (letters next to each other).
'club?' becomes 'card' (clubs is a playing card suit).
'pal' with letters rearranged gives 'pla'.
'pla'+'card'='PLACARD'
(Other definitions for placard that I've seen before include "Notice carried for public display" , "Make card, pal, into kind of ad" , "Large portable notice" , "Sign for public display" , "Printed notice" .)