Cotton twill fabric (5)
I believe the answer is:
chino
'cotton twill fabric' is the definition.
(I've seen this before)
This is all the clue.
(Other definitions for chino that I've seen before include "Cotton cloth used in trousers" , "Durable cotton fabric" , "Cotton textile material" , "Twilled cotton cloth" , "Coarse twilled cotton fabric" .)