1. hard knocks a state of misfortune or affliction
  2. protagonist the principal character in a work of fiction
  3. hardness the quality of being difficult to do
  4. hardiness the property of being physically strong and healthy
  5. hard news news that deals with serious topics or events
  6. brass knucks a small metal weapon
  7. pyrotechnics the craft of making fireworks
  8. hardening the act of making something harder
  9. hardworking characterized by hard work and perseverance
  10. Harding 29th President of the United States
  11. hardinggrass perennial grass of Australia and South Africa
  12. Harding grass perennial grass of Australia and South Africa
  13. hoarding large outdoor signboard
  14. hard cheese bad luck
  15. hard-nosed guided by practical experience and observation rather than theory
  16. hard candy candy that is brittle
  17. hardtack very firm unsalted biscuit or bread
  18. antiknock any of various compounds that are added to gasoline to reduce engine knocking
  19. vertiginous having or causing a whirling sensation; liable to falling
  20. hard-hitting characterized by or full of force and vigor