Great Lakes

Short definition from Wiktionary

Proper noun

1. 1
   A group of five lakes on the United States–Canada border, consisting of Lake Superior, Lake Michigan and Lake Huron (Lake Michigan–Huron), Lake Erie and Lake Ontario.
2. 2
   A group of lakes located in and around the East African Rift, including Lake Victoria, Lake Tanganyika, Lake Malawi, and several others.