Fabric, it won't be denied (5)
I believe the answer is:
twill
'fabric' is the definition.
(type of fabric)
'it won't be denied' is the wordplay.
I cannot quite see how this works, but
'it' could be 't' (abbreviation. e.g. in 'tis) and 't' is located in the answer.
The remaining letters 'will' is a valid word which might be clued in a way I don't see.
This may be the basis of the clue (or it may be nonsense).
Can you help me to learn more?
(Other definitions for twill that I've seen before include "Material" , "Stuff" , "Cloth with diagonal ribs" , "Strong woven fabric" , "Fabric with distinctive weave" .)