Definition of "screw bean" []

• A shrub or small tree (Prosopis pubescens) of the southwest United States and adjacent areas of Mexico, having pinnately compound leaves, tiny yellowish-white flowers, and twisted pods used as fodder. (noun)
• The pod of this plant. (noun)

American Heritage(R) Dictionary of the English Language, Fifth Edition. Copyright (c) 2011 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.