grub >> /ɡrəb/
Definition: [verb] Dig or poke superficially at the earth; dig shallowly in soil.
Example: the damage done to pastures by badgers grubbing for worms
Definition: [verb] Search for something in a clumsy and unmethodical manner; rummage.
Definition: [verb] Do demeaning or humiliating work in order to achieve something.
Example: she has achieved material independence without having to grub for it
Definition: [noun] The larva of an insect, especially a beetle.
Example: my onions are ruined by small grubs eating the roots
Definition: [noun] Food.