The term 'A Finger Lake' refers to one of the 11 Finger Lakes located in the U.S. state of New York. The Finger Lakes are long, narrow lakes that were formed by glaciers during the last Ice Age. The largest of these lakes is Seneca, which is 6 letters long. Seneca is the second-largest Finger Lake and is located in the western part of the state. It is the deepest of the Finger Lakes and is a popular destination for fishing, boating, and other recreational activities.