A brave leader (8)
I believe the answer is:
I believe this is a double definition.
'a brave' is the first definition.
(I've seen this before)
'leader' is the second definition.
(I have seen 'Brave leader' mean 'geronimo' so perhaps 'leader' could also mean 'geronimo')
(Other definitions for geronimo that I've seen before include "Whee!; Apache chief" , "One 15 [PLAYING] 24 33 [AT SIXES AND SEVENS]" , "helicopter paratroops' departure call?" , "cry from bungee jumper?" , "American shout on jumping out of an aeroplane?" .)