Great Lakes

American  

plural noun

1. a series of five lakes between the United States and Canada, comprising Lakes Erie, Huron, Michigan, Ontario, and Superior; connected with the Atlantic Ocean by the St. Lawrence River.

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Great Lakes British  

plural noun

1. a group of five lakes in central North America with connecting waterways: the largest group of lakes in the world: consists of Lakes Superior, Huron, Erie, and Ontario, which are divided by the border between the US and Canada and Lake Michigan, which is wholly in the US; constitutes the most important system of inland waterways in the world, discharging through the St Lawrence into the Atlantic. Total length: 3767 km (2340 miles). Area: 246 490 sq km (95 170 sq miles)

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Great Lakes Cultural  

1. Group of five large freshwater bodies in central North America. They include, west to east, Lake Superior, Lake Michigan, Lake Huron, Lake Erie, and Lake Ontario. Except for Lake Michigan, which is entirely within the United States, the Great Lakes serve as borders between the United States and Canada.

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Major shipping route through the St. Lawrence River to the Atlantic Ocean.

Example Sentences

Wholesale prices for diesel in the Great Lakes states, which include Illinois and Michigan, are all above $5 a gallon, he said.

From MarketWatch • May 11, 2026

Several Great Lakes states, where refinery issues have contributed to price gains, stand out.

From The Wall Street Journal • May 1, 2026

"Our fight has the objective of peace, the protection of the population, the rebuilding of the state in DR Congo, as well as the stability of the Great Lakes region," the group added.

From BBC • Dec. 12, 2025

The recall was initiated in early October by Great Lakes Cheese Co., an Ohio-based company, according to the U.S.

From Los Angeles Times • Dec. 3, 2025

As John McPhee notes, it may be buried under glacially deposited soil, like the Manson crater in Iowa, or under the Great Lakes.

From "A Short History of Nearly Everything" by Bill Bryson