Durable fabric (5)
'durable fabric' is the definition.
(I've seen this in another clue)
This is all the clue.
(Other definitions for denim that I've seen before include "dark blue material" , "Fabric used for jeans" , "Cloth for jeans, etc" , "Thick cotton cloth" , "Tough cotton fabric" .)
'durable fabric' is the definition.
(I've seen this in another clue)
This is the entire clue.
(Other definitions for serge that I've seen before include "Frenchman" , "Twilled woollen fabric" , "A twill fabric" , "Twilled fabric; name" , "Stuff" .)