St. Lawrence

American  

noun

1. a river in southeastern Canada, flowing northeast from Lake Ontario, forming part of the boundary between New York and Ontario, and emptying into the Gulf of St. Lawrence. 760 miles (1,225 kilometers) long.

2. Gulf of St. Lawrence, an arm of the Atlantic Ocean between southeastern Canada and Newfoundland.

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Example Sentences

Chinese coast-guard ships joined Russian border-guard ships last summer in patrols about 440 miles southwest of St. Lawrence Island in the U.S.

From The Wall Street Journal • Dec. 30, 2025

While its habitat ranges from the Gulf of St. Lawrence in Canada to Cape Hatteras in North Carolina, the surfclam's primary population lives off the coast of New Jersey.

From Science Daily • Apr. 19, 2024

Just beyond a thicket of treetops, the Gulf of St. Lawrence sways in a gradient of blues, a cobalt horizon line hovering where sea meets sky.

From New York Times • Mar. 22, 2024

Chester Noongwook of Savoonga was the last carrier to retire his team in 1963, when air service was established to St. Lawrence Island in the Bering Sea, according to the Alaska Geographic Society.

From Seattle Times • Mar. 13, 2024

The French were barely able to sustain trading posts in the St. Lawrence and didn’t even try to plant their flag in pre-epidemic New England.

From "1491" by Charles C. Mann