Puzzle 81

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Across
  1. 1. Hard foot of some animals
  2. 3. Capital of Zimbabwe
  3. 4. Hill of sand formed by wind
  4. 7. Large passenger ship
  5. 9. Low hills at the base of mountains
  6. 11. Structure over a gap or water
  7. 12. High-speed multi-lane road
  8. 13. Cutting tool for cloth or hedges
  9. 15. Vehicle that runs on tracks
  10. 17. Darkness between sunset and sunrise
  11. 18. Smooth bend or arc
Down
  1. 2. Not transparent or see-through
  2. 4. Herb used in cooking and pickling
  3. 5. Small fluffy dog breed
  4. 6. Emit light or glow
  5. 8. Long narrow elevated landform
  6. 10. Large heavy mammal with thick fur
  7. 13. Woolly farm animal
  8. 14. Hit or protest action
  9. 16. Tortilla chip with toppings