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Definition of seaway

seaway

/ˈsiːweɪ/
sea · way
Plural:seaways
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seaway Lexical Profile

seaway Game Scores & Validity

• noun

1

A deep inland waterway of canals and locks that permits ocean-going vessels to reach inland ports.

Example

"Completion of the new seaway allowed large cargo ships to navigate directly into the Great Lakes."

2

A navigable route or shipping lane across the sea.

Example

"Centuries of maritime trade established a busy seaway connecting the island ports with the mainland."

3

A rough or agitated expanse of open water, or the forward progress of a ship through the waves.

Example

"The sturdy schooner maintained steady control even while pitching through a heavy seaway."

Synonyms
View all synonyms for seaway

• Rhymes for seaway

• Nearby Words

seawall
seaward
seawater
seaway
seaweed
seaworthiness
seaworthy

Word Origin & Etymology

Formed in the 17th century as an English compound of 'sea' (from Old English 'sǣ') and 'way' (from Old English 'weg'), originally denoting the headway of a vessel through the sea.

Cite this Entry

Wordmom. (2026). Definition of Seaway. In Wordmom Dictionary. Retrieved Nov 5, 2026, from https://wordmom.com/dictionary/seaway
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