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Jyutping tou3
Pinyin

Definitions (Wiktionary)
  1. character
    Only used in 於菟 (wūtú).
Definitions (Unihan)
  1. dodder
  2. creeper
  3. Cangjie Input
    TNUI

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Jyutping tou4
Pinyin

Definitions (CC-CANTO)
  1. tiger (dated term)

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Jyutping tou3
Pinyin

Definitions (CC-CEDICT)
  1. dodder (Cuscuta sinensis, a parasitic vine with seeds having medicinal uses)
  2. also called 菟絲子|菟丝子
Definitions (CC-CANTO)
  1. dodder (Cuscuta sinensis, a parasitic vine with seeds having medicinal uses)/also called 菟丝子
Definitions (Wiktionary)
  1. character
    Used in 菟葵.
  2. character
    Used in 菟絲/菟丝 (tùsī) and 菟絲子/菟丝子 (tùsīzǐ).
  3. character
    Used in 菟裘.