noun
space bar
The long key at the bottom of a keyboard that inserts a space. Computing term.
See also: スペースキー
スペースバーを押して、単語の間を空けてください。
Press the space bar to put spaces between words.
Variant with interpunct; less common in everyday use.
Synonym; スペースバー is more common in modern usage.
From English 'space bar'.