grub

nouns

informal terms for a meal
chow, chuck, eats, grub
a soft thick wormlike larva of certain beetles and other insects
grub
is derived from
grubby
is a type of (narrower)
the immature free-living form of most invertebrates and amphibians and fish which at hatching from the egg is fundamentally unlike its parent and must metamorphose
larva

verbs

ask for and get free; be a parasite
bum, cadge, grub, mooch, sponge
search about busily
grub
is a type of (narrower)
try to locate or discover, or try to establish the existence of
"The police are searching for clues"; "They are searching for the missing man in the entire county"
look for, search, seek