A menu bar is a row or strip of menu items titles that, when clicked, display dropdown menus of other items or commands. A menu bar is an integral graphical user interface (GUI) component for a variety of software applications. In Windows, a menu bar is located at the top of an application window. A Macintosh menu bar is fixed at the top of the display screen.
Techopedia explains Menu Bar
Menu bar items are tailored to specific software applications. Although most software applications have menu bars, they do not all contain the same submenus. Additionally, similar submenus do not necessarily contain the same command and menu item subsets. Common menu bar items include File, Edit and View submenus.
Some menu bar items have shortcut key combinations that allow options to be selected without searching for each dropdown menu item. Windows examples include copy (Ctrl+c), paste (Ctrl+v) and undo (Ctrl+z).