What does "free space" mean?

vacuum; a space free of matter.

Free space

Common synonyms include: hard drive storage, uncontrolled space, unoccupied region, unregulated space, unwalled area.

noun

noun ·Rare ·Advanced level

Noun

1
vacuum; a space free of matter. countable, uncountable
2
Used other than figuratively or idiomatically: see free, space. countable, uncountable
"Take your things up to the attic: there's some free space there."

"Take your things up to the attic: there's some free space there."