Piece of bed linen (5)
I believe the answer is:
sheet
'piece of bed linen' is the definition.
(I've seen this in another clue)
This is all the clue.
(Other definitions for sheet that I've seen before include "Item of bed linen like these" , "Item of bedlinen" , "leaf" , "Piece of linen, paper, etc" , "* [MATERIAL]" .)