bush bean

from The American Heritage® Dictionary of the English Language, 5th Edition.

• noun A shrubby variety of the string bean.
• noun Any bean plant with an upright, bushy growth not requiring an artificial support.

from The Century Dictionary.

• noun An American name for beans that do not climb, or dwarf beans; the usual form of string-beans and wax-beans.

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

• noun a bean plant whose bushy growth needs no supports