Aardvark's meal (4)
I believe the answer is:
ants
'aardvark's meal' is the definition.
(I've seen this in another clue)
This is all the clue.
(Other definitions for ants that I've seen before include "They live in a formicary" , "Inhabitants of a formicary" , "Emmets" , "Hard workers" , "Termites" .)