Egyptian dancing girl seen in Rueil-Malmaison (4)
I believe the answer is:
alma
'egyptian dancing girl' is the definition.
(I've seen this in another clue)
'in rueil-malmaison' is the wordplay.
'in' indicates a hidden word.
'ALMA' is hidden in the letters of 'rueil malmaison'.
'seen' acts as a link.
(Other definitions for alma that I've seen before include "dancing girl" , "Essence" , "The . . . . Mater is the old school" , "Loving girl" , "One's university" .)