# seaway

> English word · Noun · frequency rank #51,381

## Definitions
1. A lane or route at sea that is regularly used by ships; a sea lane or trade route.
2. An inland waterway used by seagoing shipping.
3. The headway of a vessel.

## Etymology
From Middle English seewey, from Old English sǣweġ (“a seaway, a path through the sea”), equivalent to sea + way. Compare Saterland Frisian Seegong (“seaway, swell”), German Seegang (“seaway, swell”).

## Source
Compiled from Wiktionary via kaikki.org (CC BY-SA). Data vintage: 2026-05-06.
Canonical page: https://plainspell.com/en/word/seaway