Lake Michigan is one of the five Great Lakes of North America, and the only one located entirely within the United States. The second largest of the Great Lakes by volume and the third largest of the Great Lakes by surface area (behind Lake Superior and Lake Huron), 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." The lake is slightly smaller than the US state of West Virginia.