1. tearing down complete destruction of a building
  2. letting down the act of causing something to move to a lower level
  3. drink down drink down entirely
  4. tone down make less strong or intense; soften
  5. ding-dong the noise made by a bell
  6. bring down move something or somebody to a lower position
  7. dingdong go `ding dong', like a bell
  8. track down pursue for food or sport (as of wild animals)
  9. touchdown a goal worth six points in American football
  10. touch down come or bring (a plane) to a landing
  11. take down move something or somebody to a lower position
  12. talk down belittle through talk
  13. drag down exert a force with a heavy weight
  14. takedown being brought to the mat from a standing position
  15. bunk down go to bed
  16. Rhincodon whale sharks
  17. stepping down the act of abdicating
  18. take lying down suffer without protest; suffer or endure passively
  19. Eddington English astronomer remembered for his popular elucidation of relativity theory (1882-1944)
  20. knock down cause to come or go down