Dig in the dirt for food (4)
I believe the answer is:
grub
This clue might be a double definition.
'dig in the dirt' is the first definition.
'grub' can be an answer for 'dig' (I've seen this in another clue). I'm not sure about the 'in the dirt' bit.
'food' is the second definition.
(grub can informally mean food)
'for' is the link.
Can you help me to learn more?
(Other definitions for grub that I've seen before include "Worm-like larva of an insect" , "Insect larva or slang food (4)" , "Food - worm" , "Nosh - larva" , "ferret > eats" .)