: a wall or embankment to protect the shore from erosion or to act as a breakwater
Examples of seawall in a Sentence
Recent Examples on the Web
The smaller number of Antarctic Treaty nations might make building a 50-mile underwater seawall to protect a melting glacier a little more feasible to coordinate than geoengineering measures that would require UN buy-in, Elliott writes.
—
Drew Goins, The Atlantic, 2 Feb. 2026
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.
—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
See All Example Sentences for seawall
Examples are automatically compiled from online sources to
show current usage.
Read More
Opinions expressed in the examples do not represent those of Merriam-Webster or its editors.
Send us feedback.
Drew Goins, The Atlantic, 2 Feb. 2026
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.
—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
See All Example Sentences for seawall
Cite this Entry
“Seawall.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/seawall. Accessed 9 Feb. 2026.
Copy CitationKids Definition
seawall
noun
sea·wall
ˈsē-ˌwȯl 
: a wall or bank to prevent sea waves from wearing away the shore
Love words? Need even more definitions?
Merriam-Webster unabridged
