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
Drones are being used to survey the coastline for shark activity, and a report is being prepared for the coroner.
—
Sam Stevenson, MSNBC Newsweek, 27 Nov. 2025
Reinforcing the capital Caracas is actively being fortified with fresh layers of defenses, with one of the most striking developments on the outskirts of the capital, near Venezuela’s coastline in the north.
—Avery Schmitz, CNN Money, 27 Nov. 2025
The trio holds strategic positions along the Greek coastline, providing an integrated Eastern Mediterranean route for owners and captains.
—Rachel Cormack, Robb Report, 26 Nov. 2025
The city of Auckland is a popular shooting destination thanks to its geographical diversity — with plenty of urban landscapes, forests, coastlines, black sand beaches and volcanic fields within a short drive from the center — but also because of its wealth of studios and post-production facilities.
—Rafa Sales Ross, Variety, 26 Nov. 2025
See All Example Sentences for coastline
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Sam Stevenson, MSNBC Newsweek, 27 Nov. 2025
Reinforcing the capital Caracas is actively being fortified with fresh layers of defenses, with one of the most striking developments on the outskirts of the capital, near Venezuela’s coastline in the north.
—Avery Schmitz, CNN Money, 27 Nov. 2025
The trio holds strategic positions along the Greek coastline, providing an integrated Eastern Mediterranean route for owners and captains.
—Rachel Cormack, Robb Report, 26 Nov. 2025
The city of Auckland is a popular shooting destination thanks to its geographical diversity — with plenty of urban landscapes, forests, coastlines, black sand beaches and volcanic fields within a short drive from the center — but also because of its wealth of studios and post-production facilities.
—Rafa Sales Ross, Variety, 26 Nov. 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 2 Dec. 2025.
Copy CitationKids Definition
coastline
noun
coast·line
ˈkōst-ˌlīn
: the outline or shape of a coast
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