A filing card is a small, rectangular piece of paper or cardstock used for organizing and categorizing information. It typically features a uniform size and shape, making it easy to store in a filing system. Filing cards often have lines or grids printed on them, allowing users to neatly write or type relevant details such as names, addresses, dates, or any other pertinent data. They are commonly utilized in offices, libraries, and other organizational settings to maintain structured records and facilitate efficient information retrieval.