Stage movement (4)
I believe the answer is:
step
I believe this clue is a double definition.
'stage' is the first definition.
(thesaurus)
'movement' is the second definition.
(step is a kind of movement)
(Other definitions for step that I've seen before include "Tramp" , "some progress" , "Footfall" , "Section of flight" , "Gradation" .)