a tree, Prosopis pubescens, of the legume family, native to the southwestern U.S., bearing twisted pods used as fodder.
the pod itself.
Origin of screw bean
An Americanism dating back to 1865–70
Also called tornillo.
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019
Examples from the Web for screw bean
The screw-bean or screw-pod mesquite is a small slender-trunked tree with sharp spines at the bases of the hoary foliage.Trees Worth Knowing|Julia Ellen Rogers