A "band-aid" is a small adhesive strip used to cover minor cuts, scrapes, or wounds. It typically consists of a soft, absorbent pad in the center, which protects the injury, and a sticky backing that adheres to the skin. Band-aids come in various sizes and shapes, making them suitable for different types of injuries. Originally developed by Earle Dickson in the 1920s, band-aids have become a common household item. They are designed to keep the wound clean and promote healing while preventing dirt and bacteria from entering. Many band-aids are also available in waterproof and decorative designs for added convenience and appeal.