Sculpture is broken (4)
I believe the answer is:
bust
This clue is a double definition.
'sculpture' is the first definition.
(bust is a kind of sculpture)
'is broken' is the second definition.
(bust can mean broken)
(Other definitions for bust that I've seen before include "Breast - broken" , "Head-and-shoulders piece" , "Smash and grab" , "Break" , "Financially ruined" .)