Air current; coil (4)
I believe the answer is:
wind
I believe this is a double definition.
'air current' is the first definition.
(I've seen this in another clue)
'coil' is the second definition.
(I've seen this before)
(Other definitions for wind that I've seen before include "Take turns" , "trade, for example" , "Meaningless talk; twist" , "Twist, turn; breeze" , "See 7" .)