Messy stain on material (5)
I believe the answer is:
satin
'material' is the definition.
(satin is a kind of material)
'messy stain' is the wordplay.
'messy' indicates anagramming the letters.
'stain' anagrammed gives 'SATIN'.
'on' is the link.
(Other definitions for satin that I've seen before include "Stain on shiny cloth" , "Fine material" , "Smooth and silky" , "Stain on silky cloth" , "Smooth glossy fabric" .)