noun ·Moderate ·College level

Definitions

Noun

1. 1
   A coastal defence in the form of a wall or an embankment.
2. 2
   a protective structure of stone or concrete; extends from shore into the water to prevent a beach from washing away wordnet

Synonyms

All synonyms

breakwaterabutmentanchorageanchorage groundarc-boutantarch dam

Example

More examples

"The waves dashed against the seawall."

Etymology

From Middle English se-walle, from Old English sǣweall (“seawall”), equivalent to sea + wall.

Data sourced from Wiktionary, WordNet, CMU, and other open linguistic databases. Updated March 2026.