New shape stage (5)
I believe the answer is:
phase
'stage' is the definition.
('phase' can be a synonym of 'stage')
'new shape' is the wordplay.
'new' indicates anagramming the letters.
'shape' with letters rearranged gives 'PHASE'.
(Other definitions for phase that I've seen before include "Shape into stage" , "Any distinct time period" , "Truman -, US novelist" , "Aspect of moon" , "Passing stage" .)