"발" is the Korean word for "foot." It refers to the lower extremity of the leg, which is used for standing, walking, and running. The foot consists of various parts, including the toes, arch, and heel, and plays a crucial role in balance and mobility. In addition to its physical function, the foot is also significant in various cultural practices. For example, in Korean culture, taking off shoes before entering a home is a common custom, emphasizing cleanliness and respect for the living space.