Meaning

• An immature stage in the life cycle of an insect; a larva.

• Food.

• A short, thick man; a dwarf.

• A dirty person.

• A despicable person; a lowlife.

Meaning

• To scavenge or in some way scrounge, typically for food.

• To dig; to dig up by the roots; to root out by digging; often followed by up.

  "to grub up trees, rushes, or sedge"

• To supply with food.

• To eat.