Across
- 1. Place to write letters (9)
- 3. Table game (4-4)
- 5. Organized body of knowledge (7)
- 6. Single stroke over par (5)
- 11. Specialist in numbers (13)
- 12. Lawn game that uses hoops and mallets (7)
- 13. Bird that's 'bald'(5)
- 14. A person who builds and maintains machines (8)
- 16. Methodical, careful (8)
- 17. "I'm ___ of a big deal" (4)
Down
- 2. "Glass half-full" outlook (8)
- 4. This clue has been originally contrived (9)
- 7. Holiday home on wheels (7)
- 8. Item that might have a mouse or bugs (8)
- 9. Feathered cork (11)
- 10. Acorn that made it (3)
- 15. Like a light breeze (6)