"문" (mun) is the Korean word for "door." It serves as an entryway or barrier that allows people to enter or exit a space. Doors can be made from various materials, including wood, metal, and glass, and they come in different styles and sizes. In Korean culture, doors often symbolize transitions and new beginnings. For example, the traditional Korean house, known as 한옥 (hanok), features sliding doors called 미닫이 (midaji), which are designed to blend seamlessly with the surrounding environment.