Silk or satin, say (6)
I believe the answer is:
fabric
I believe this is a double definition.
'silk or satin' is the first definition.
(I've seen this in another clue)
'say' is the second definition.
(thesaurus)
(Other definitions for fabric that I've seen before include "Material in general" , "Woven, knitted or felted cloth" , "(Texture of) cloth" , "Manufactured cloth" , "Perhaps felt" .)