Grand Banks

WordReference Random House Unabridged Dictionary of American English © 2025

Grand′ Banks′, 

1. Place Names an extensive shoal SE of Newfoundland: fishing grounds. 350 mi. (565 km) long;
   40,000 sq. mi. (104,000 sq. km).

Also, Grand′ Bank′. 

Collins Concise English Dictionary © HarperCollins Publishers::

Grand Banks noun:plural

1. a part of the continental shelf in the Atlantic, extending for about 560 km (350 miles) off the SE coast of Newfoundland: meeting place of the cold Labrador Current and the warm Gulf Stream, producing frequent fogs and formerly rich fishing grounds