Wind into rings (4)
I believe the answer is:
coil
'wind into rings' is the definition.
(I've seen this in another clue)
This is the entire clue.
(Other definitions for coil that I've seen before include "Wire winding" , "Eg, wire wound round and round" , "Wind (wire, rope, etc)" , "spring" , "Wind in a series of loops" .)