Short twisted fibre (5)
I believe the answer is:
'short' is the definition.
(similar in meaning)
'twisted fibre' is the wordplay.
'twisted' indicates an anagram.
'fibre' anagrammed gives 'BRIEF'.
(Other definitions for brief that I've seen before include "not lasting long" , "Short in duration" , "Solicitor" , "brusque > QC, perhaps" , "scanty" .)