horse·bean /ˈhɔrsˌbin/
蠶豆
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]