You searched for: “geophagia
geophagia (s) (noun) (no pl)
1. The consumption of earth, dirt, clay, or chalk: The practice of geophagia is especially typical of earthworms eating soil. .
2. A form of pica, or the ingestion of chalk, clay, dirt, sand, or ice: Geophagia can be a pathological disorder when a person has a peculiar appetite or craving for substances that are not edible.