yam bean Meaning, Definition & Usage

  1. noun twining plant of Amazon basin having large edible roots
    potato bean; Pachyrhizus tuberosus.
  2. noun Central American twining plant with edible roots and pods; large tubers are eaten raw or cooked especially when young and young pods must be thoroughly cooked; pods and seeds also yield rotenone and oils
    Pachyrhizus erosus.

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