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Jyutping tou1
Pinyin táo

Definitions (CC-CANTO)
  1. to cleanse/name of a river/a type of ink stone

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Jyutping tou4
Pinyin táo

Definitions (CC-CANTO)
  1. to cleanse/name of a river/a type of ink stone
Definitions (Wiktionary)
  1. character
    Taohe River
  2. character, Classical-Chinese
    to wash one’s hands and face
Definitions (Unihan)
  1. cleanse
  2. river in Gansu province
  3. Cangjie Input
    ELMO

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Jyutping jiu4
Pinyin táo

Definitions (CC-CEDICT)
  1. to cleanse
  2. name of a river
Definitions (CC-CANTO)
  1. name of a river