trackball
(noun)
noun
1. an electronic device consisting of a rotatable ball in a housing; used to position the cursor and move images on a computer screen
- a trackball is essentially an upside-down mouse
Definition categories: man–made
(noun)
1. an electronic device consisting of a rotatable ball in a housing; used to position the cursor and move images on a computer screen
- a trackball is essentially an upside-down mouse
Definition categories: man–made