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. Bucket

2. Young sheep

3. Unclothed

4. Dutch cheese

5. Female servant

6. Diesel oil

7. Travel permit

8. Corrosive substance

9. Financial liability

10. Pith helmet

11. Lazy

12. Sicilian volcano

13. Very keen

14. Narcotic

15. Insect larva

16. Feathered friend