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.

Lake Michigan is one of the five Great Lakes of North America, and the only one in the group located entirely within the United States. It is bounded, from west to east, by the U.S. states of Wisconsin, Illinois, Indiana, and Michigan. For a brief period, the informally named Justice League Detroit used a secret tunnel beneath the lake to access the Justice League Bunker.

Lake Michigan is one of the five Great Lakes of North America, and the only one in the group located entirely within the United States. It is bounded, from west to east, by the U.S. states of Wisconsin, Illinois, Indiana, and Michigan. The word "Michigan" was originally used to refer to the lake itself, and is believed to come from the Ojibwa Indian word mishigami, meaning "great water."