Very little money for food (4)
I believe the answer is:
bean
I believe this is a double definition.
'very little money' is the first definition.
'food' is the second definition.
(bean is a kind of food)
'for' is the link.
(Other definitions for bean that I've seen before include "popular character with kids" , "Seed of coffee plant" , "coffee, perhaps" , "Fava, kidney or mung, say" , "Edible seed" .)