Wordspiral

1. Roster 2. Saracen 3. Inter 4. Egg part 5. Hit with foot 6. Male monarch 7. Shine intensely 8. Volition 9. Mass of bread 10. Unsightly fat 11. Defeat 12. Care for 13. Hale 14. Precious metal 15. Rush 16. Tor

Starting from 1, fill in the grid in a clockwise direction with four-letter words. The last letter of each word becomes the first letter of the next word. If you have correctly filled in the grid there should be a seven-letter key word reading across from 8. KEYWORD CLUE: A marsupial