Current turn (4)
I believe the answer is:
wind
I believe this clue is a double definition.
'current' is the first definition.
(wind is a type of current)
'turn' is the second definition.
(I've seen this before)
(Other definitions for wind that I've seen before include "section of orchestra" , "Meander, breeze" , "Gust, e.g." , "Air-current" , "Breeze; meaningless talk" .)