Home food savings (4,3)
I believe the answer is:
nest egg
'savings' is the definition.
('nest egg' can be a synonym of 'savings')
'home food' is the wordplay.
'home' becomes 'nest' (I've seen this before).
'food' becomes 'egg' (egg is a kind of food**).
'nest'+'egg'='NEST-EGG'
(Other definitions for nest egg that I've seen before include "Money saved for a rainy day - by bird?" , "Rainy day savings" , "a little money?" , "Money saved for the future" , "Saved-up money" .)