Computer drop-down menus are a type of user interface element that allow users to select an option from a LIST of choices. They are commonly used in computer programs and websites, and are typically represented by a small arrow or triangle that when clicked on reveals a LIST of options. The term 'MENU' is derived from the French word for 'LIST'. Computer drop-down menus are an efficient way to present users with a range of options without taking up too much space on the screen.