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.