trackball
nounA ball mounted in a stationary housing and rotated to control a pointer on a computer screen.
nounA
an electronic device consisting of a rotatable ball in a housing; used to position the cursor and move images on a computer screen
A ball mounted in a stationary housing and rotated to control a pointer on a computer screen.
nounA
an electronic device consisting of a rotatable ball in a housing; used to position the cursor and move images on a computer screen
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