The term 'mouse alternative' can refer to two different solutions: a three-letter word, 'MAN, ' and a nine-letter word, 'trackball.' A MAN is a human being, typically male, who is capable of performing tasks that require physical or mental effort. A trackball is an input device used in computing that is similar to a mouse but instead of moving the device itself, the user moves a ball with their fingers to control the cursor on the screen.