Pull girl over lounger (7)
I believe the answer is:
laggard
'lounger' is the definition.
(thesaurus)
'pull girl over' is the wordplay.
'pull' becomes 'drag' (drag is a kind of pull).
'girl' becomes 'gal' ('gal' can be a synonym of 'girl').
'over' says the letters should be written backwards.
'drag'+'gal'='draggal'
'draggal' written backwards gives 'LAGGARD'.
(Other definitions for laggard that I've seen before include "one going slowly" , "slowcoach" , "One failing to keep up" , "See straggler" , "Dilatory person" .)