coastline
noun
coast·line
ˈkōs(t)-ˌlīn 
1
: a line that forms the boundary between the land and the ocean or a lake
2
: the outline of a coast
Examples of coastline in a Sentence
The plane flew along the eastern coastline.
Recent Examples on the Web
However, the thawing of Russia’s northern coastline has opened a lane for vessels, shaving almost three weeks off shipping times compared to the journey around the Cape of Good Hope.
—
Jeronimo Gonzalez, semafor.com, 24 Sep. 2025
Rising seas swallowing coastlines.
—Antonio Maria Delgado, Miami Herald, 23 Sep. 2025
Add to that the Bering Sea’s seasonal contribution of 75-mile-per-hour winds and 36-foot waves, and this stretch of coastline becomes a front-row seat to nature’s drama.
—Alexandra Marvar, AFAR Media, 23 Sep. 2025
Adaptation for us means more than defending coastlines.
—Feleti Penitala Teo, Time, 22 Sep. 2025
See All Example Sentences for coastline
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Jeronimo Gonzalez, semafor.com, 24 Sep. 2025
Rising seas swallowing coastlines.
—Antonio Maria Delgado, Miami Herald, 23 Sep. 2025
Add to that the Bering Sea’s seasonal contribution of 75-mile-per-hour winds and 36-foot waves, and this stretch of coastline becomes a front-row seat to nature’s drama.
—Alexandra Marvar, AFAR Media, 23 Sep. 2025
Adaptation for us means more than defending coastlines.
—Feleti Penitala Teo, Time, 22 Sep. 2025
See All Example Sentences for coastline
Cite this Entry
“Coastline.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/coastline. Accessed 1 Oct. 2025.
Copy CitationKids Definition
coastline
noun
coast·line
ˈkōst-ˌlīn
: the outline or shape of a coast
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