What can it be described as?

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Across
  1. 3. Might be poisonous
  2. 6. Synonym for "smart"
  3. 9. Man's best friend
  4. 10. Cookie
  5. 12. To be held against your will
  6. 14. This month
  7. 15. Colour
  8. 17. The largest planet in our solar system
  9. 19. Siddharta...
  10. 20. Good jumper
  11. 21. Country in Asia
  12. 22. Your two favourite numbers
  13. 23. The prime minister
  14. 24. Fridays mountain-trip
Down
  1. 1. Capitol of Australia
  2. 2. Lava comes from this
  3. 4. 60 of these are an hour
  4. 5. This thing can fly
  5. 7. Opposite of day
  6. 8. Norwegian political party
  7. 11. Capitol of Iceland
  8. 13. Math subject
  9. 16. "Not okay" synonym
  10. 18. Sabrina...