NOUN
- annual semi-erect bushy plant of tropical South America bearing long pods with white seeds grown especially for forage
How To Use jack bean In A Sentence
- Sumner had in 1926 crystalized an enzyme, urease, from jack beans and suggested that the crystals were the pure protein. The Nobel Prize in Chemistry: The Development of Modern Chemistry
- Jack beans, chili peppers, and peanuts were all domesticated in the same region.