st. lawrence seaway

from WordNet (r) 3.0 (2006)
St. Lawrence Seaway
    n 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 [syn: {Saint Lawrence Seaway}, {St. Lawrence
         Seaway}]
    

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