yam_bean
1. [ noun ] (botany) twining plant of Amazon basin having large edible roots
Synonyms: Pachyrhizus_tuberosus potato_bean
Related terms: vine Pachyrhizus
2. [ noun ] (botany) 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
Related terms: vine Pachyrhizus