worm grunting n.— «Earthworms are sensitive to low-frequency vibrations. These drive some types of earthworms to the surface, and in the southeastern US is used in a practice known as “worm grunting,” by scraping a piece of metal on...
worm grunting n.— «Earthworms are sensitive to low-frequency vibrations. These drive some types of earthworms to the surface, and in the southeastern US is used in a practice known as “worm grunting,” by scraping a piece of metal on...
