TRACKBALL

Pronunciation (US):

(GB):

 I. (noun) 

Sense 1

Meaning:

An electronic device consisting of a rotatable ball in a housing; used to position the cursor and move images on a computer screen

Example:

a trackball is essentially an upside-down mouse

Classified under:

Nouns denoting man-made objects

Hypernyms ("trackball" is a kind of...):

electronic device (a device that accomplishes its purpose electronically)

Credits