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 Home Equity Line Of Credit (HELOC) Source Home Equity Line Of Credit (HELOC)Definition: A revolving credit line secured by a second deed on a house.