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

Summer 2022 Hundreds of harbor seals and gray seals die along the coast of Maine and along the St. Lawrence Estuary in Quebec.

From New York Times • Apr. 22, 2024

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

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

Once again he was excited about the completion of the St. Lawrence Seaway, and he stopped referring to me altogether because I hadn’t been born.

From "Middlesex: A Novel" by Jeffrey Eugenides