mescal bean

from Wiktionary, Creative Commons Attribution/Share-Alike License.

• noun A genus (Calia) of three or four species of shrubs or small trees in the subfamily Faboideae of the pea family Fabaceae, native to southwestern North America from western Texas to New Mexico and Arizona in the United States, and south through Chihuahua, Coahuila and Nuevo León in northern Mexico.

from WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.

• noun shrub or small tree having pinnate leaves poisonous to livestock and dense racemes of intensely fragrant blue flowers and red beans