Small amount for each fighter (8)
I believe the answer is:
scrapper
'fighter' is the definition.
(synonyms)
'small amount for each' is the wordplay.
'small amount' becomes 'scrap' (I've seen this before).
'for each' becomes 'per' (per person).
'scrap'+'per'='SCRAPPER'
(Other definitions for scrapper that I've seen before include "An informal fighter, or one who discards waste" , "someone fighting" , "An informal fighter - sounds ragged" , "I get shot of something" , "Boxer" .)