Screen pulled back is hiding loo, for the most part (5)
I believe the answer is:
shoji
'screen' is the definition.
(I know that shoji is a type of screen)
I don't understand how the rest of the clue works.
Can you help me to learn more?
(Other definitions for shoji that I've seen before include "Japanese papered wall" , "Japanese sliding door" , "Screen" .)