Definition: The word "arrowworm" comes from the Greek root "aroux," meaning worm, as in a worming creature that eats worms (e.g., as in "I am a worm eating worm"). The root suggests its presence was supernatural or unnatural, implying it has an unusual or abnormal nature. It can also be used metaphorically to suggest a person's character is unassuming and not naturally inclined towards certain things, like a worm in the garden.