Support theatre work's revolving stages (5)
I believe the answer is:
podia
'stages' is the definition.
(plural of podium)
'support theatre work's revolving' is the wordplay.
'support' becomes 'aid' (synonyms).
'theatre work' becomes 'op' (abbreviation for opus).
'revolving' says the letters should be written backwards.
'aid'+'op'='aidop'
'aidop' written backwards gives 'PODIA'.
(Other definitions for podia that I've seen before include "pedestals" , "bases" , "Support structures for speakers" , "Raised platforms" , "Stands" .)