GRUB, verb intransitive To dig; to be occupied in digging. GRUB, verb transitive 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, noun [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. 1. A short thick man; a dwarf, in contempt.
Source: Webster's 1828 American Dictionary ↗ · public-domain · returned verbatim, no AI