It's the Most Frequently Struck Key on a Keyboard
This page is the CodyCross answer for the clue below from Australia, Group 1010, Puzzle 1 (Sydney Olympic Games).
Question is: It's the Most Frequently Struck Key on a Keyboard
and the answer is: SPACEBAR
Word Meaning:
SPACE BAR — (computing) A key, in the shape of a bar, near the bottom of a keyboard, that generates a space character when pressed.
Definitions from Wiktionary.