Denims (5)
I believe the answer is:
jeans
'denims' is the definition.
('jean' can be a synonym of 'denim')
This is the entire clue.
(Other definitions for jeans that I've seen before include "Casual trousers, sometimes stonewashed?" , "Trousers made of strong cotton, usually dyed blue" , "Are they worn by girls in Britian" , "(Usually) blue casual wear" , "boys in France?" .)