滴答

dīdā
  1. (onom.) pattering sound
  2. drip drip (of water)
  3. tick tock (of clock)
  4. also pr. dīda

CEDICT

onomatopoeic

Entry Composition

1 滴 dī
  1. to drip
  2. to let drip; to apply (eye drops etc)
  3. (bound form) a drop (of liquid)
  4. classifier for drops of liquid
2 答 dā bound form having the same meaning as the free word 答 dá, used in 答應 dāying, 答理 dāli etc