Source : WordNet®

horsebean
     n 1: seed of the broad-bean plant [syn: {broad bean}, {fava bean}]
     2: large shrub or shrubby tree having sharp spines and pinnate
        leaves with small deciduous leaflets and sweet-scented
        racemose yellow-orange flowers; grown as ornamentals or
        hedging or emergency food for livestock; tropical America
        but naturalized in southern United States [syn: {Jerusalem
        thorn}, {Parkinsonia aculeata}]