yam bean

noun

1. twining plant of Amazon basin having large edible roots

   Synonyms

   • potato bean, Pachyrhizus tuberosus

   Less specific

   • vine

   Member of

   • Pachyrhizus, genus Pachyrhizus

2. 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

   Synonyms

   • Pachyrhizus erosus

   Less specific

   • vine

   Member of

   • Pachyrhizus, genus Pachyrhizus