A stylus (plural: styli or styluses)'s a writing utensil. The word's also used for a computer accessory (PDAs). It usually refers to a narrow elongated staff, similar to a modern ballpoint pen. Many styluses are heavily curved to be held more easily. Another widely-used writing tool's the stylus used by blind users in conjunction with the slate for punching out the dots in Braille. Styli were first used by the ancient Mesopotamians in order to write in cuneiform, Egyptians (Middle Kingdom), an… (More on Stylus)