The Superfund is defined as a U.S. government fund for the cleanup of toxic waste sites.(noun)
An example of the Superfund is a program set up by the government, The Comprehensive Environmental Response, Compensation, and Liability Act, to identify toxic waste sites and fund the cleanup of the sites by collecting fees and fines from companies responsible for creating toxic waste sites.
See Superfund in Webster's New World College Dictionary
Learn more about Superfund