A paper bed cover (5)
I believe the answer is:
sheet
I believe this is a double definition.
'a paper' is the first definition.
(I know that sheet is a type of paper)
'bed cover' is the second definition.
(I've seen this before)
(Other definitions for sheet that I've seen before include "Bedcover" , "It usually gets blanket coverage" , "Single piece of paper" , "Set of unseparated stamps" , "newspaper" .)