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
Throughout the 26 miles of coastline, loggerhead sea turtles come ashore to nest and lay eggs from May through August.
—
Grace Haynes, Southern Living, 12 Apr. 2025
The Bell 206 helicopter, flying for the tour company New York Helicopters, went down in the Hudson River near the Jersey City, New Jersey, coastline at about 3:17 p.m. Thursday, according to New York Police Department (NYPD) Commissioner Jessica Tisch.
—Alexandra Koch, FOXNews.com, 11 Apr. 2025
The United States has the highest number of commercial helicopters in the world, USA Today reports, with most concentrated in tourist areas known for stunning aerial vistas like Manhattan, the Grand Canyon and along the coastlines of Hawaii.
—Mackenzie Schmidt, People.com, 11 Apr. 2025
Approximately 580 million years ago, South China was part of the northern coastline of the supercontinent Rodinia and positioned near the equator.
—David Bressan, Forbes.com, 6 Apr. 2025
See All Example Sentences for coastline
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Grace Haynes, Southern Living, 12 Apr. 2025
The Bell 206 helicopter, flying for the tour company New York Helicopters, went down in the Hudson River near the Jersey City, New Jersey, coastline at about 3:17 p.m. Thursday, according to New York Police Department (NYPD) Commissioner Jessica Tisch.
—Alexandra Koch, FOXNews.com, 11 Apr. 2025
The United States has the highest number of commercial helicopters in the world, USA Today reports, with most concentrated in tourist areas known for stunning aerial vistas like Manhattan, the Grand Canyon and along the coastlines of Hawaii.
—Mackenzie Schmidt, People.com, 11 Apr. 2025
Approximately 580 million years ago, South China was part of the northern coastline of the supercontinent Rodinia and positioned near the equator.
—David Bressan, Forbes.com, 6 Apr. 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 21 Apr. 2025.
Copy CitationKids Definition
coastline
noun
coast·line
ˈkōst-ˌlīn
: the outline or shape of a coast
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