Get things smoothed out at the club? (4)
I believe the answer is:
iron
'the club?' is the definition.
(type of golf club)
'get things smoothed out at' is the wordplay.
I cannot quite see how this works, but
'at' could be 'on' (location) and 'on' is present in the answer.
This may be the basis of the clue (or it may be nonsense).
Can you help me to learn more?
(Other definitions for iron that I've seen before include "Strong metal; golf club" , "Club; element" , "Metal (that may be pumped?)" , "Metallic chemical element" , "rations in emergency?" .)