Turn round and smile slyly back (4)
I believe the answer is:
reel
'turn' is the definition.
(both can mean to wind or rotate)
I don't understand how the rest of the clue works.
Can you help me to learn more?
(Other definitions for reel that I've seen before include "Whirl around" , "Lively dance or fishing rod controller" , "Move unsteadily (like a Scottish dancer?)" , "long stretch of film" , "Film spool" .)