Trackball
noun
1.
a computer input device for controlling the pointer on a display screen by rotating a ball set inside a case.
noun
1.
(computing) a device consisting of a small ball, mounted in a cup, which can be rotated to move the cursor around the screen
Read Also:
- Tracker
noun 1. a structure consisting of a pair of parallel lines of rails with their crossties, on which a railroad train, trolley, or the like runs. 2. a wheel rut. 3. evidence, as a mark or a series of marks, that something has passed. 4. Usually, tracks. footprints or other marks left by an animal, […]
- Tracker ball
hardware A pointing device consisting of a ball housed in a socket containing sensors to detect rotation of the ball about two axes – like an upside-down mouse. The user rolls the ball with his thumb or the palm of his hand to move a cursor. Tracker balls are common on CAD workstations for ease […]
- Tracker dog
noun 1. a dog specially trained to hunt fugitives or to search for missing people
- Tracker fund
noun 1. (finance) an investment fund that is administered so that its value changes in line with the average value of shares in a market
- Track event
noun 1. a competition in athletics, such as relay running or sprinting, that takes place on a running track