Fabric liable to show a stain (5)
I believe the answer is:
satin
'fabric' is the definition.
(type of fabric)
'liable to show a stain' is the wordplay.
'stain' anagrams to 'SATIN'.
However, I am not sure how this is indicated.
Can you help me to learn more?
(Other definitions for satin that I've seen before include "Smooth glossy fabric" , "Fine material" , "Smooth and silky" , "Stain on silky cloth" , "covered with?" .)