Definition of seaway
1 : the sea as a route for travel; also : an ocean traffic lane
2 : a moderate or rough sea
3 : a deep inland waterway that admits ocean shipping
Recent Examples of seaway from the Web
A seaway is said to have split the continent into Western and Eastern halves and an unknown location of a land connection allowed the Triceratops to head east.
Everybody knows there was a shallow seaway cutting across the continent during the Late Cretaceous.
These example sentences are selected automatically from various online news sources to reflect current usage of the word 'seaway'. Views expressed in the examples do not represent the opinion of Merriam-Webster or its editors. Send us feedback.
First Known Use of seaway
before 12th century
Seen and Heard
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