Initially obstructive wife to enable young head-turner (5)
I believe the answer is:
owlet
'young head-turner' is the definition.
(owls can rotate their heads a long way round)
'initially obstructive wife to enable' is the wordplay.
'initially' suggests taking the first letters.
'to enable' becomes 'let'.
The first letters of 'obstructive wife' is 'ow'.
'ow'+'let'='OWLET'
(Other definitions for owlet that I've seen before include "Wise young" , "Nestling" , "Baby nocturnal raptor" , "Towel (anag)" , "Young nocturnal bird of prey" .)