Fat hen is a term used to describe a weedy plant known as Chenopodium album. The plant usually grows to a height of up to one meter and features green leaves that are shaped like a diamond. Fat hen is also known by several synonyms, including Lamb's-quarters, pigweed, goosefoot, and white goosefoot. The plant is a significant source of food for livestock, and its leaves are often used to make herbal medicines. In ancient times, fat hen was used as a food source by the Greeks and Romans, and also served as an essential ingredient in Polish cuisine. Despite its weed-like status, fat hen is an important plant with diverse uses.