Soil satin material (5)
I believe the answer is:
stain
'soil' is the definition.
(I know that soil can be written as stain)
'satin material' is the wordplay.
'material' indicates anagramming the letters (the letters provide the material for a new word).
'satin' is an anagram of 'STAIN'.
(Other definitions for stain that I've seen before include "Stigma" , "Blotch on satin" , "Discoloured mark" , "Blot" , "Unsightly mark" .)