jack bean

noun

Definition of jack bean

: a bushy annual tropical American legume (Canavalia ensiformis) grown especially for forage

First Known Use of jack bean

1885, in the meaning defined above

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The first known use of jack bean was in 1885

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Cite this Entry

“Jack bean.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/jack%20bean. Accessed 14 Jun. 2021.

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More Definitions for jack bean

jack bean

noun
\ ˈjak-ˌbēn How to pronounce jack bean (audio) \

Medical Definition of jack bean

1 : an annual tropical American plant of the genus Canavalia especially : a plant (C. ensiformis) having long pods with white seeds and grown especially for forage
2 : the seed of the jack bean that is a source of canavalin and urease

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