蚕豆
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}]