Fight to get rid of (5)
I believe the answer is:
scrap
I believe this is a double definition.
'fight' is the first definition.
(I've seen this before)
'get rid of' is the second definition.
(I've seen this before)
'to' is the link.
(Other definitions for scrap that I've seen before include "Informal fight for waste material" , "Discard; fight" , "Just a fragment, maybe of food" , "Discard the small fragment" , "Tiny piece; abolish" .)