Pulled-down window coverings (6)
![Ross](/clue/static/ross-mug.min.png)
I believe the answer is:
shades
(Other definitions for shades that I've seen before include "Ghosts or slang sunglasses" , "Slangy sunglasses for literary ghosts" , "Sunglasses (informal)" , "Sunglasses, colloquially" , "Old ghosts or modern sunglasses" .)