Brief order for textile (5)
I believe the answer is:
fibre
'textile' is the definition.
(fibre is a kind of textile)
'brief order' is the wordplay.
'order' indicates anagramming the letters.
'brief' anagrammed gives 'FIBRE'.
'for' acts as a link.
(Other definitions for fibre that I've seen before include "Basis of yarn" , "Texture - strength of character" , "Dietary material; thread" , "Thread - strength of character" , "(Material composed of) thread(s)" .)