Carpenter's sweepings (7)
I believe the answer is:
sawdust
'carpenter's sweepings' is the definition.
(I've seen this in another clue)
This is the entire clue.
(Other definitions for sawdust that I've seen before include "it was on pub floor" , "Powdery residue from cut wood" , "remains in the workshop" , "[WASTE] from timberyard" , "Powdered wood" .)