Wrinkle in defaced material (5)
I believe the answer is:
linen
'material' is the definition.
(I know that linen is a type of material)
'wrinkle in defaced' is the wordplay.
'wrinkle' becomes 'line' (synonyms).
'defaced' means to remove the first letter (the word with its face removed).
'in' with its initial letter removed is 'n'.
'line'+'n'='LINEN'
(Other definitions for linen that I've seen before include "bedclothes perhaps" , "Flaxen fabric" , "sheets, perhaps" , "bedsheets?" , "Sheets, tablecloth etc." .)