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
Each unit can engage up to a dozen targets at ranges of up to 30 miles—well short of the Taiwanese coastline, let alone the Chinese mainland.
—
Micah McCartney, MSNBC Newsweek, 4 Dec. 2025
On this moody swath of Pacific Northwest coastline, the weather is dramatic and the scenery is stunning.
—Evie Carrick, Travel + Leisure, 4 Dec. 2025
The short videos show walk-throughs of a bedroom and bathroom, the coastline and helipad, and the pool area.
—James Hill, ABC News, 3 Dec. 2025
Indian Ocean cyclones roar onto the coastline, the longest in Africa.
—CBS News, 3 Dec. 2025
See All Example Sentences for coastline
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Micah McCartney, MSNBC Newsweek, 4 Dec. 2025
On this moody swath of Pacific Northwest coastline, the weather is dramatic and the scenery is stunning.
—Evie Carrick, Travel + Leisure, 4 Dec. 2025
The short videos show walk-throughs of a bedroom and bathroom, the coastline and helipad, and the pool area.
—James Hill, ABC News, 3 Dec. 2025
Indian Ocean cyclones roar onto the coastline, the longest in Africa.
—CBS News, 3 Dec. 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 11 Dec. 2025.
Copy CitationKids Definition
coastline
noun
coast·line
ˈkōst-ˌlīn
: the outline or shape of a coast
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