What Does Taskbar Mean?
The taskbar is a movable, concealable icon bar that is set on the very edge of the graphical user interface (GUI) desktop and serves as a launching pad for applications as well as a holder for icons indicating running programs. The taskbar was first introduced by Microsoft in Windows 95 and has since been adopted by other operating systems.
Techopedia Explains Taskbar
The taskbar’s default position is at the bottom of the screen; but it can be repositioned to the left, right and top portions of the desktop. It may be locked in place, set to auto-hide or kept on top of other windows. Using the taskbar, a running program can easily be made current (i.e. made usable) when many programs are running simultaneously. Icons in the taskbar that represent running applications also serve as toggle buttons that allow switching windows for running applications between the minimized state and the maximized or resized state.