SPIRAL

Starting from 1, fill in the grid clockwise with four-letter words. The last letter of each word becomes the first letter of the next to reveal the seven-letter key word in the shaded boxes.

1. Polish 2. Flutter 3. Cougar 4. Elderly 5. Entrance 6. Tear 7. Not light 8. Be aware of 9. Unwelcome plant 10. Child's toy 11. Uneven walk 12. Poke 13. Watch face 14. Rich soil 15. Handle clumsily 16. Lighting device