Scrap paper (3)
I believe the answer is:
rag
This clue is a double definition.
'scrap' is the first definition.
(I've seen this in other clues)
'paper' is the second definition.
(rag paper is a kind of paper)
(Other definitions for rag that I've seen before include "Play practical jokes on - worthless newspaper" , "some jazz music" , "Piece of cloth and student fun" , "Piece of old cloth" , "Practical joke" .)