Turn back women wearing jeans (6)
I believe the answer is:
swivel
'turn' is the definition.
(swiveling is a kind of turning)
'back women wearing jeans' is the wordplay.
'back' is a reversal indicator.
'women' becomes 'w' (standard abbreviation).
'wearing' is an insertion indicator.
'jeans' becomes 'levis' (Levi's is a brand of jeans).
'w' inserted within 'levis' is 'leviws'.
'leviws' in reverse letter order is 'SWIVEL'.
(Other definitions for swivel that I've seen before include "Turn on a chair, say" , "swinging" , "Spin on the spot" , "Rotating coupling" , "Turn about a point" .)