刀欛豆 [－－－]

Jyutping dou1 欛 dau6
Pinyin dāo bà dòu

Definitions (Wiktionary)
  1. noun, Xiang
    sword bean (Canavalia gladiata)
    (syn.) 扁莢, 四季豆, 刀豆, 扁荚