grub

GRUB, v.i. To dig; to be occupied in digging.

GRUB, v.t. To dig; mostly followed by up. To grub up, is to dig up by the roots with an instrument; to root out by digging, or throwing out the soil; as, to grub up trees, rushes or sedge.

GRUB, n. [from the Verb.] A small worm; particularly, a hexapod or six-footed worm, produced from the egg of the beetle, which is transformed into a winged insect.