Brawl about a scarf (6)
I believe the answer is:
fracas
'brawl' is the definition.
(I've seen this in another clue)
'about a scarf' is the wordplay.
'about' indicates anagramming the letters.
'a'+'scarf'='ascarf'
'ascarf' with letters rearranged gives 'FRACAS'.
(Other definitions for fracas that I've seen before include "A scarf (anag)" , "Free-for-all" , "Bust-up" , "Dispute" , "Noisy altercation" .)