Arrest in the art gallery (4)

I believe the answer is:
bust
This might be a double definition.
'arrest' is the first definition.
(bust can mean a police arrest)
'art gallery' is the second definition.
The definition and answer can be both man-made objects as well as being singular nouns.
Perhaps there's an association between them I don't understand?
'in the' acts as a link.
Can you help me to learn more?
(Other definitions for bust that I've seen before include "Small statue" , "Sculpture of head and chest" , "Broken - chest" , "Sculpture of head and shoulders" , "Penniless" .)
