Flax cloth (5)
I believe the answer is:
linen
'flax cloth' is the definition.
(I've seen this in another clue)
This is all the clue.
(Other definitions for linen that I've seen before include "Material made from flax" , "clothes and sheets" , "E.g. bedclothes" , "Fabric from the fibres of the flax plant" , "Underclothing" .)