ˌGreat ˈLakes, the BrE AmE
a group of five lakes along the border between the US and Canada. These lakes are Lake ↑ superior , Lake ↑ Michigan , Lake ↑ Huron , Lake ↑ Erie , and Lake ↑ Ontario . They are connected to form the ↑ St Lawrence Seaway which can be used by large ships. The lakes and especially ↑ Niagara Falls are also popular with tourists.