Fight for a mere morsel (5)
I believe the answer is:
scrap
This clue might be a double definition.
'fight' is the first definition.
(a scrap is a minor fight)
'mere morsel' is the second definition.
'scrap' can be an answer for 'morsel' (I've seen this in another clue). I'm not certain of the 'mere' bit.
'for a' is the link.
Can you help me to learn more?
(Other definitions for scrap that I've seen before include "Fight; abolish" , "Ditch - dust-up" , "Tussle over junk metal?" , "Break up - fight" , "Abolish; leftover" .)