掉

diào
  1. to fall
  2. to drop
  3. to lag behind
  4. to lose
  5. to go missing
  6. to reduce
  7. fall (in prices)
  8. to lose (value, weight etc)
  9. to wag
  10. to swing
  11. to turn
  12. to change
  13. to exchange
  14. to swap
  15. to show off
  16. to shed (hair)
  17. (used after certain verbs to express completion, fulfillment, removal etc)

CEDICT