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Jyutping bei1
Pinyin

Definitions (Unihan)
  1. castor-oil plant, Ricinus communis
  2. Cangjie Input
    THWP

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Jyutping bei6
Pinyin

Definitions (CC-CEDICT)
  1. the castor-oil plant
Definitions (Wiktionary)
  1. character
    Only used in 蓖麻 (bìmá, “castor oil plant”).