A hole in an organ is known as a PORE. Pores are small openings in the surface of an organ, such as the skin, that allow for the passage of air, water, and other substances. They are typically found in the epidermis, the outermost layer of the skin, and can range in size from microscopic to visible. Pores are also found in other organs, such as the lungs, where they allow for the exchange of oxygen and carbon dioxide.