: 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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One commercial jet careened into a seawall while landing in heavy fog; another plunged into Tokyo Bay for unknown reasons; yet another, into Japan’s Seto Inland Sea, also for unknown reasons.
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Burkhard Bilger, New Yorker, 2 Mar. 2026
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 same group said that building infrastructure like seawalls to protect communities against rising sea levels and flooding by 2040 will cost Connecticut a minimum of $5.3 billion.
—Stephen Underwood, Hartford Courant, 28 Jan. 2026
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Burkhard Bilger, New Yorker, 2 Mar. 2026
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 same group said that building infrastructure like seawalls to protect communities against rising sea levels and flooding by 2040 will cost Connecticut a minimum of $5.3 billion.
—Stephen Underwood, Hartford Courant, 28 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 Mar. 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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