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

The fossils were collected from sites in what is now southern Germany, specifically a shallow seaway that once connected the ancient seas known as the Upper Marine Molasse. —Melissa Cristina Márquez, Forbes.com, 11 June 2025

Freedom of navigation for international seaways has been a U.S. policy fixture for more than two centuries. —Steve Forbes, Forbes.com, 27 May 2025

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

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