Mess about with an effective snooker player? (6)
I believe the answer is:
potter
This could be a double definition.
'mess about' is the first definition.
(I've seen this before)
'snooker player?' is the second definition.
(someone who pots snooker balls)
'with an effective' is the link.
This may not be correct. Some or all of it may belong to one of the definitions.
Can you help me to learn more?
(Other definitions for potter that I've seen before include "eg Harry or Beatrix" , "Harry, Dennis or Beatrix?" , "Work aimlessly" , "Pootle" , "One who makes ceramic ware" .)