: a wall or embankment to protect the shore from erosion or to act as a breakwater
Examples of seawall in a Sentence
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For those structures, a hardened seawall serves as the core, buried beneath a sandy dune layer that often features native vegetation more conducive to wildlife habitat.
—
Molly Duerig, Miami Herald, 28 June 2025
Coral reefs provide a natural seawall during tropical storms by breaking wave energy before the tides reach shore.
—Alexandra York, Forbes.com, 27 June 2025
Regions across the Philippines have begun building towering seawalls to protect against storm surges, though many locals doubt their efficacy.
—Charlie Campbell, Time, 5 June 2025
In contrast, when waves strike vertical concrete seawalls, the energy is reflected back into the water rather than absorbed.
—Sara Pezeshk, The Conversation, 16 Apr. 2025
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Molly Duerig, Miami Herald, 28 June 2025
Coral reefs provide a natural seawall during tropical storms by breaking wave energy before the tides reach shore.
—Alexandra York, Forbes.com, 27 June 2025
Regions across the Philippines have begun building towering seawalls to protect against storm surges, though many locals doubt their efficacy.
—Charlie Campbell, Time, 5 June 2025
In contrast, when waves strike vertical concrete seawalls, the energy is reflected back into the water rather than absorbed.
—Sara Pezeshk, The Conversation, 16 Apr. 2025
See All Example Sentences for seawall
Cite this Entry
“Seawall.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/seawall. Accessed 20 Jul. 2025.
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seawall
noun
sea·wall
ˈsē-ˌwȯl 
: a wall or bank to prevent sea waves from wearing away the shore
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