Sample of burkha/kimono fabric (5)
I believe the answer is:
khaki
'fabric' is the definition.
(khaki is a kind of fabric)
'sample of burkhakimono' is the wordplay.
'sample of' says the answer is hidden in the clue (an extract or sample of the clue).
'KHAKI' is hidden in the letters of 'burkhakimono'.
(Other definitions for khaki that I've seen before include "Military camouflage colour" , "Army dress material" , "Yellowish brown (used by military)" , "Olive-drab colour" , "Yellowish brown colour" .)