Yes, spaces is a Scrabble word!

Verb

1. Place at intervals

Noun

1. The unlimited expanse in which everything is located

2. An empty area (usually bounded in some way between things)

3. An area reserved for some particular purpose

4. Any location outside the Earth's atmosphere

5. A blank character used to separate successive words in writing or printing

6. The interval between two times

7. A blank area

8. One of the areas between or below or above the lines of a musical staff

9. (printing) a block of type without a raised letter; used for spacing between words or sentences