Some cameleers brawl (5)
I believe the answer is:
melee
'brawl' is the definition.
(I've seen this in another clue)
'some cameleers' is the wordplay.
'some' says the answer is hidden in the clue (some of the parts of the word are used).
'MELEE' can be found hidden inside 'cameleers'.
(Other definitions for melee that I've seen before include "Confused conflict, affray" , "Affray; muddled group" , "Rumpus" , "confused group" , "A confused free-for-all" .)