Draw expression of satisfaction after changing sides (4)
I believe the answer is:
pull
'draw' is the definition.
(synonyms)
'expression of satisfaction after changing sides' is the wordplay.
I cannot really understand how this works, but
'sides' could be 'll' (an abbreviation for left written twice) and 'll' is found within 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 pull that I've seen before include "Influence; draw" , "Tell that to the marines" , "Jerk" , "Damage (a muscle)" , "Attract; tow" .)