A tooltip is a small pop-up box that appears when you hover your mouse over an item on a computer screen, like a button or a link. It provides helpful information about that item, such as its function or purpose, making it easier for users to understand how to interact with a website or application. Tooltips are commonly used in software interfaces to enhance user experience. For example, when you hover over a settings icon, a tooltip might display text like "Adjust your preferences." This quick reference helps users navigate without cluttering the interface with too much information. Tooltips are a simple yet effective way to improve usability in digital environments.