yam bean is a noun meaning "twining plant of Amazon basin having large edible roots". It carries 2 recorded senses.
twining plant of Amazon basin having large edible roots
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
Definitions, synonyms and semantic relations for yam bean come from Princeton University’s WordNet. Commonness is measured against a corpus of everyday English. Full sources and licences.