any of various kinds of bean of which the unripe seeds are removed from the pods before cooking.
the seed itself.
Origin of shell bean
An Americanism dating back to 1865–70
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019
British Dictionary definitions for shell bean
US any of various bean plants that are cultivated for their edible seeds rather than for their pods
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012