A fabric (6)
'a fabric' is the definition.
(cotton is a kind of fabric)
This is the entire clue.
(Other definitions for cotton that I've seen before include "Plantation product" , "Plant, its fibres for yarn" , "Cloth woven from a plant" , "Fabric (of natural fibre)" , "Plant fibre for fabrics" .)
'a fabric' is the definition.
(velvet is a kind of fabric)
This is all the clue.
(Other definitions for velvet that I've seen before include "Rich soft fabric" , "Thick-piled fabric" , "Thick piled fabric" , "Silky, densely-piled fabric" , "This glove shows gentleness - perhaps to deceive" .)