Yes, piece is a Scrabble word!

Verb

1. To join or unite the pieces of

2. Create by putting components or members together

3. Join during spinning

4. Eat intermittently; take small bites of

5. Repair by adding pieces

Noun

1. A separate part of a whole

2. An item that is an instance of some type;

3. A portion of a natural object

4. A musical work that has been created

5. An instance of some kind

6. An artistic or literary composition

7. A portable gun

8. A serving that has been cut from a larger portion

9. A distance

10. A work of art of some artistic value

11. A period of indeterminate length (usually short) marked by some action or condition

12. A share of something

13. Game equipment consisting of an object used in playing certain board games