A dropdown menu is a graphical user interface element that allows users to select an option from a list. When a user clicks on the menu, it expands to reveal multiple choices, which can include text, images, or icons. This design helps save space on a webpage or application, making it easier for users to navigate without overwhelming them with too many visible options. Dropdown menus are commonly used in websites and software applications, often found in navigation bars or forms. They can enhance user experience by organizing information and providing a clear way to access different features or settings, such as selecting a country or language.