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
Few places exemplify the raw, untamed beauty of Ireland’s west coast as this natural wonder, a dramatic stretch of coastline that's equal parts historic site, geological marvel, conservation area, and unbeatable photo backdrop.
—
Condé Nast, Condé Nast Traveler, 14 Mar. 2026
Beyond Bahía del Águila, Cape Froward will likely remain a playground only for intrepid backpackers—those capable of wild camping, carrying heavy loads, and navigating the tide charts needed to cross narrow coastlines and three broad rivers.
—Mark Johanson, Outside, 14 Mar. 2026
By Michael Harrelson For The Union-Tribune From its 70 miles of coastline to the 43 square miles of open desert in Borrego Springs, San Diego County’s topography is widely varied, marked largely by a hilly geography.
—The San Diego Union Tribune, San Diego Union-Tribune, 14 Mar. 2026
Virginia Beach, Virginia More than 30 miles of coastline, scenic walking trails, and a mild climate make Virginia Beach an attractive city for retirees.
—Patricia Doherty, Travel + Leisure, 13 Mar. 2026
See All Example Sentences for coastline
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Condé Nast, Condé Nast Traveler, 14 Mar. 2026
Beyond Bahía del Águila, Cape Froward will likely remain a playground only for intrepid backpackers—those capable of wild camping, carrying heavy loads, and navigating the tide charts needed to cross narrow coastlines and three broad rivers.
—Mark Johanson, Outside, 14 Mar. 2026
By Michael Harrelson For The Union-Tribune From its 70 miles of coastline to the 43 square miles of open desert in Borrego Springs, San Diego County’s topography is widely varied, marked largely by a hilly geography.
—The San Diego Union Tribune, San Diego Union-Tribune, 14 Mar. 2026
Virginia Beach, Virginia More than 30 miles of coastline, scenic walking trails, and a mild climate make Virginia Beach an attractive city for retirees.
—Patricia Doherty, Travel + Leisure, 13 Mar. 2026
See All Example Sentences for coastline
Cite this Entry
“Coastline.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/coastline. Accessed 19 Mar. 2026.
Copy CitationKids Definition
coastline
noun
coast·line
ˈkōst-ˌlīn
: the outline or shape of a coast
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