: 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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Aside from insurance, to reduce climate vulnerability, governments can also build out physical defenses like seawalls and flood barriers, while deepening partnerships with multilateral organizations like the Asian Development Bank and World Bank.
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Angelica Ang, Fortune, 30 Jan. 2026
The school still needs about $2 million to get it across the finish line — including the heavy lifting of bursting the seawall to create the inland lagoon that will host the mangroves.
—Alex Harris, Miami Herald, 27 Jan. 2026
The city has ignored nearly every issue identified in the 1970s Precise Plan — crumbling seawalls, failing infrastructure, visual blight along Mission Boulevard.
—U T Readers, San Diego Union-Tribune, 9 Jan. 2026
The seasonal shift highlights how deeply the invasive species is established in Florida
Each winter in South Florida, residents may spot a surprising sight in trees, along canals or basking on seawalls: green iguanas glowing in various shades of orange.
—Moná Thomas, PEOPLE, 24 Dec. 2025
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Angelica Ang, Fortune, 30 Jan. 2026
The school still needs about $2 million to get it across the finish line — including the heavy lifting of bursting the seawall to create the inland lagoon that will host the mangroves.
—Alex Harris, Miami Herald, 27 Jan. 2026
The city has ignored nearly every issue identified in the 1970s Precise Plan — crumbling seawalls, failing infrastructure, visual blight along Mission Boulevard.
—U T Readers, San Diego Union-Tribune, 9 Jan. 2026
The seasonal shift highlights how deeply the invasive species is established in Florida
Each winter in South Florida, residents may spot a surprising sight in trees, along canals or basking on seawalls: green iguanas glowing in various shades of orange.
—Moná Thomas, PEOPLE, 24 Dec. 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 31 Jan. 2026.
Copy CitationKids Definition
seawall
noun
sea·wall
ˈsē-ˌwȯl 
: a wall or bank to prevent sea waves from wearing away the shore
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