Cash given to underground cartoonist for a little food (10)
I believe the answer is:
breadcrumb
'little food' is the definition.
(I've seen this before)
'cash given to underground cartoonist' is the wordplay.
'cash' becomes 'bread' (I've seen this in another clue).
'given to' says to put letters next to each other.
'underground cartoonist' becomes 'crumb' (I can't explain this - if you can you should believe this answer much more).
'bread'+'crumb'='BREADCRUMB'
'for a' acts as a link.
Can you help me to learn more?
(Other definitions for breadcrumb that I've seen before include "little food" , "Bit of a loaf?" , "Loaf fragment" , "Particle of a loaf" , "Tiny piece of a loaf" .)