Run rings around? (4)
'run rings around?' is the definition.
(I've seen this in another clue)
This is all the clue.
(Other definitions for coil that I've seen before include "Loop - conductor" , "Wind into rings or spiral" , "Wire winding" , "Helix" , "Curl, spiral" .)
(Other definitions for outdo that I've seen before include "Perform better than (someone)" , "Perform better than, be superior to" , "going to top?" , "Be better in performance (than another person)" , "Exceed" .)