seaway

noun

sea·​way ˈsē-ˌwā 

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

Examples of seaway in a Sentence

Recent Examples on the Web

While Deinosuchus had long been classified as an alligator relative, its distribution on both sides of this vast seaway was an unsolved puzzle. —Mindy Weisberger, CNN Money, 23 Apr. 2025

Imagine a snake as long as a school bus gliding silently through a prehistoric seaway, stalking its prey. —Scott Travers, Forbes, 13 Mar. 2025

An outlier among alligators Since the mid-19th century, fossils of Deinosuchus have been found on both sides of the ancient seaway and belong to at least two species. —Mindy Weisberger, CNN Money, 23 Apr. 2025

And its efforts to avoid Western sanction enforcement are raising environmental and navigational risks in crowded seaways. —Dominique Soguel, The Christian Science Monitor, 12 Feb. 2025

Word History

First Known Use

before the 12th century, in the meaning defined at sense 1

Rhymes for seaway

• airway
• allay
• archway
• array
• ashtray
• astray
• aue
• away
• ballet
• belay
• beltway
• beret

Kids Definition

seaway

noun

sea·​way -ˌwā 

1

a

: a route for travel on the sea

b

: an ocean traffic lane

2

: a rough sea

3

: a deep inland waterway that admits ocean shipping