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Jyutping coi2 waan4
Pinyin cǎi huán

Definitions (Wiktionary)
  1. noun
    glossy ibis

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Jyutping coi2 syun4
Pinyin cǎi huán

Definitions (CC-CEDICT)
  1. (bird species of China) glossy ibis (Plegadis falcinellus)