Super Finance Glossary Over 10,000 financial glossary terms... Browse by Letter: A B C D E F G H I J K L M N O P Q R S T U V W X Y Z Or Enter Search Term: By Author: All Sources Campbell Harvey Internal Revenue Service Finance Globe FDIC Snow Gold CFTC U.S. Census Bureau Search Tips Glass-Steagall Act Source Glass-Steagall ActDefinition: 1933 legislation prohibiting commercial banks to own, underwrite, or deal in corporate stock and corporate bonds.