Pontchartrain definition by Webster's New World
Webster's New World College Dictionary Copyright © 2010 by Wiley Publishing, Inc., Cleveland, Ohio. Used by arrangement with John Wiley & Sons, Inc.
shallow saltwater lake in SE La.: 625 sq mi (1,619 sq km)
Origin: after Louis, Comte de Pontchartrain (1643-1727), French statesman and amp; explorer
Pontchartrain definition by American Heritage Dictionary
A lake of southeast Louisiana north of New Orleans. A causeway links New Orleans with the region north of the lake.