saint lawrence seaway is a noun meaning "a seaway involving the Saint Lawrence River and the Great Lakes that was developed jointly by Canada and the United States; oceangoing ships can travel as far west as Lake Superior". It carries one recorded sense.
a seaway involving the Saint Lawrence River and the Great Lakes that was developed jointly by Canada and the United States; oceangoing ships can travel as far west as Lake Superior
Definitions, synonyms and semantic relations for saint lawrence seaway come from Princeton University’s WordNet. Commonness is measured against a corpus of everyday English. Full sources and licences.