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

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

A year later, the bodies of eight people — an Indian family and a Romanian family — were recovered from the St. Lawrence River in Quebec.

From Seattle Times • Feb. 12, 2024

That was where the Quints were and the St. Lawrence River.

From "The Heart is a Lonely Hunter" by Carson McCullers