An input device that allows for the free planar movement of an on-screen icon, usually an arrow. The user can trigger events by placing the icon over a region on the display and pushing one of the device's buttons (termed "clicking"). Pointing devices allow the user to control the operation of the computer and applications.
(n.) A mechanical or electronic device, such as a mouse, that manipulates the screen pointer.
n. An input device with which a user interacts with a computer. A mouse is one example of a pointing device.