Yes, turn is a Scrabble word!

Verb

1. Change orientation or direction, also in the abstract sense

2. Undergo a transformation or a change of position or action

3. Undergo a change or development

4. Cause to move around or rotate

5. Change to the contrary

6. Pass to the other side of

7. Pass into a condition gradually, take on a specific property or attribute; become

8. Let (something) fall or spill from a container

9. Move around an axis or a center

10. Cause to move around a center so as to show another side of

11. To send or let go

12. To break and turn over earth especially with a plow

13. Shape by rotating on a lathe or cutting device or a wheel

14. Change color

15. Twist suddenly so as to sprain

16. Cause to change or turn into something different; assume new characteristics

17. Accomplish by rotating

18. Get by buying and selling

19. Cause to move along an axis or into a new direction

20. Channel one's attention, interest, thought, or attention toward or away from something

21. Cause (a plastic object) to assume a crooked or angular form

22. Alter the functioning or setting of

23. Direct at someone

24. Have recourse to or make an appeal or request for help or information to

25. Go sour or spoil

26. Become officially one year older

Noun

1. A circular segment of a curve

2. The act of changing or reversing the direction of the course

3. (game) the activity of doing something in an agreed succession

4. An unforeseen development

5. A movement in a new direction

6. The act of turning away or in the opposite direction

7. Turning or twisting around (in place)

8. A time for working (after which you will be relieved by someone else)

9. (sports) a division during which one team is on the offensive

10. A short theatrical performance that is part of a longer program

11. A favor for someone

12. Taking a short walk out and back