当

當
dāng
  1. to be
  2. to act as
  3. manage
  4. withstand
  5. when
  6. during
  7. ought
  8. should
  9. match equally
  10. equal
  11. same
  12. obstruct
  13. just at (a time or place)
  14. on the spot
  15. right
  16. just at

CEDICT

Homographs

当 dāng
  1. (onom.) dong
  2. ding dong (bell)
当 dàng
  1. at or in the very same...
  2. suitable
  3. adequate
  4. fitting
  5. proper
  6. to replace
  7. to regard as
  8. to think
  9. to pawn
  10. (coll.) to fail (a student)