叮咚 [－－]

Jyutping ding1 dung1
Pinyin dīng dōng

Definitions (CC-CEDICT)
  1. (onom.) ding dong
  2. jingling of bells
  3. clanking sound
Definitions (Wiktionary)
  1. adv, onomatopoeic
    the sound made by the collision of metals, stones, jade or a drop of water: ding dong; tinkle
    (syn.) 叮当, 叮噹