Divisions of a play (4)
I believe the answer is:
acts
'divisions of a play' is the definition.
(I've seen this in another clue)
This is all the clue.
(Other definitions for acts that I've seen before include "Pieces of legislation" , "NT book; laws" , "Deeds; NT book" , "Fifth book of the New Testament" , "[BOOK] of the 26 [BIBLE]" .)