Definitions for "Lake Michigan"
the 3rd largest of the Great Lakes; the largest fresh-water lake entirely within the United States borders
Lake Michigan is the only one of the five Great Lakes wholly within the U.S. border. It is bounded by the states of Michigan, Indiana, Illinois, and Wisconsin. It is connected with and flows into Lake Huron through the Straits of Mackinac.
one of the Great Lakes; northeastern Illinois is on the shores of this huge lake.