ro·bin·ia \rōˈbinēə\noun Etymology: New Latin, from Jean Robin died 1629 French botanist + New Latin -ia 1.capitalized: a genus of No. American trees and shrubs (family Leguminosae) having showy racemose pink or white flowers — see bristly locust, clammy locust, locust 2.-s: any plant of the genus Robinia