Yes, days is a Scrabble word!

Noun

1. The time during which someone's life continues

2. Time for Earth to make a complete rotation on its axis

3. Some point or period in time

4. A day assigned to a particular purpose or observance

5. The time after sunrise and before sunset while it is light outside

6. The recurring hours when you are not sleeping (especially those when you are working)

7. An era of existence or influence

8. The period of time taken by a particular planet (e.g. Mars) to make a complete rotation on its axis

9. The time for one complete rotation of the earth relative to a particular star, about 4 minutes shorter than a mean solar day

10. A period of opportunity

11. United States writer best known for his autobiographical works (1874-1935)