Girl from Ipanema retreating (3)
I believe the answer is:
ena
'girl' is the definition.
(woman's name)
'from ipanema retreating' is the wordplay.
'from' indicates a hidden word.
'retreating' says the letters should be written in reverse.
'ane' is hidden within 'ipanema'.
'ane' reversed gives 'ENA'.
(Other definitions for ena that I've seen before include "- - Sharples ('Coronation Street')" , "First name of Coronation Street's Widow Sharples, d. 1980" , "- - Sharples (TV)" .)