Cursor Control That Can Be Rolled in Any Direction

This page is the CodyCross answer for the clue below from Space Exploration, Group 919, Puzzle 3 (Ring Nebula).

Question is: Cursor Control That Can Be Rolled in Any Direction

and the answer is: TRACKBALL

Word Meaning:

TRACKBALL — (computing) A pointing device consisting of a ball housed in a socket

Definitions from Wiktionary.