West Side club? (5)
I believe the answer is:
wedge
'club?' is the definition.
(wedge is a kind of club)
'west side' is the wordplay.
'west' becomes 'w' ('W' can be a synonym of 'west').
'side' becomes 'edge' (edge is a kind of side**).
'w'+'edge'='WEDGE'
(Other definitions for wedge that I've seen before include "Golf club, V-shape" , "Splitting device" , "Significant amount of money (informal)" , "Tapering block" , "Jam" .)