coastline
noun
coast·lineˈkōs(t)-ˌlīn 
1
:a line that forms the boundary between the land and the ocean or a lake
2
:the outline of acoast
Examples ofcoastline in a Sentence
The plane flew along the easterncoastline.
Recent Examples on the WebExplore Destin Seagrove, Florida The 24-mile stretch of Florida panhandlecoastlinealong Scenic Highway 30A has been picking up steam as a top vacation destination for travelers from the South and beyond.—
Tara Massouleh McCay,Southern Living, 30 Mar. 2025Seagrass also cleans polluted water and protectscoastlinesfrom erosion.—Ian Urbina,Los Angeles Times, 28 Mar. 2025Though the 2021-debuting ship offers robust itineraries to the Caribbean and Panama, our seven-day Norse Legends cruise started and ended in the Netherlands, making memorable stops to photogenic hamlets on Norway’scoastlinealong the way.—Demarco Williams,Forbes.com, 28 Mar. 2025That April and May, Russia focused its offensive on Ukraine's southerncoastlineon the Black Sea, seizing several major port cities and imposing a blockade on food exports.—Cybele Mayes-Osterman,USA Today, 25 Mar. 2025See All Example Sentences forcoastline
Examples are automatically compiled from online sources to show current usage.Read More Opinions expressed in the examples do not represent those of Merriam-Webster or its editors.Send us feedback.
Tara Massouleh McCay,Southern Living, 30 Mar. 2025Seagrass also cleans polluted water and protectscoastlinesfrom erosion.—Ian Urbina,Los Angeles Times, 28 Mar. 2025Though the 2021-debuting ship offers robust itineraries to the Caribbean and Panama, our seven-day Norse Legends cruise started and ended in the Netherlands, making memorable stops to photogenic hamlets on Norway’scoastlinealong the way.—Demarco Williams,Forbes.com, 28 Mar. 2025That April and May, Russia focused its offensive on Ukraine's southerncoastlineon the Black Sea, seizing several major port cities and imposing a blockade on food exports.—Cybele Mayes-Osterman,USA Today, 25 Mar. 2025See All Example Sentences forcoastlineWord History
First Known Use
1856, in the meaning defined atsense 1
Rhymes forcoastline
Browse Nearby Words
Cite this Entry
“Coastline.”Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/coastline. Accessed 13 Apr. 2025.
Copy CitationKids Definition
coastline
nouncoast·lineˈkōst-ˌlīn
:the outline or shape of a coast
More from Merriam-Webster oncoastline
Thesaurus:All synonyms and antonyms forcoastline
Nglish:Translation ofcoastline for Spanish Speakers
Britannica.com:Encyclopedia article aboutcoastline
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