Brief about fine thread (5)
I believe the answer is:
fibre
'fine thread' is the definition.
'fibre' can be an answer for 'thread' (I've seen this in another clue). I am not certain of the 'fine' bit.
'brief about' is the wordplay.
'about' indicates anagramming the letters.
'brief' anagrammed gives 'FIBRE'.
Can you help me to learn more?
(Other definitions for fibre that I've seen before include "Dietary material; thread" , "Thread, filament" , "Threadlike substance" , "Long fine thread" , "In brief, a thread" .)