Tartan garment (4)
I believe the answer is:
kilt
'tartan garment' is the definition.
(I've seen this in another clue)
This is the entire clue.
(Other definitions for kilt that I've seen before include "Bone; circle line" , "Scotsman's garment" , "Under which, traditionally, a Scotsman wears nothing" , "Knee-length tartan garment" , "Pleated tartan skirt" .)