Removes works by Pollock, say (9)
I believe the answer is:
abstracts
I believe this clue is a double definition.
'removes' is the first definition.
'works by pollock say' is the second definition.
(ref to painter Jackson Pollock)
(Other definitions for abstracts that I've seen before include "some of Kandinsky's paintings?" , "Summaries; removes" , "Purloins" .)