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

He was arraigned in the local Oswegatchie Town Court before being held at the St. Lawrence County Jail on $2,500 cash bail.

From Salon • Mar. 8, 2024

The students were all wearing T-shirts with St. Lawrence University printed on them.

From "Facing the Lion" by Joseph Lemasolai Lekuton and Herman Viola