st. lawrence seaway

Noun
  1. 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 (synset 104136955)
    is an instance of: sea lane, seaway, ship route, trade route - a lane at sea that is a regularly used route for vessels
    same as: saint lawrence seaway

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