/ Thesaurus / G Synonyms of gulf of st. lawrence Find synonyms for: Noun1. Gulf of Saint Lawrence, Gulf of St. Lawrenceusage: an arm of the northwest Atlantic Ocean off the southeastern coast of CanadaWordNet 3.0 Copyright © 2006 by Princeton University. All rights reserved. Related Content Daily Word Quiz: chicory Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language