Definition of coastline
1 : a line that forms the boundary between the land and the ocean or a lake
2 : the outline of a coast
From the M-W Editors
Examples of coastline in a Sentence
The plane flew along the eastern coastline.
Recent Examples of coastline from the Web
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Photo by Corey Arnold Our coastline draws visitors from all over the world.
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The administration's proposed 2018 budget would halve funding for key counterterrorism programs at another kind of border: The 361 ports dotted across America's 95,000 miles of coastline.
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NJ beaches are open in 119 of our 130 miles of coastline.
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And unlike some stretches of, say, the Italian coastline, there isn't that sensation of being packed in like sardines onto one patch of a rocky beach.
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Moscow uses Kuznetsov to show the Russian flag abroad, sending it to Syria on multiple occasions and traveling up and down the European coastline—including a recent trip through the English Channel.
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The lake offers a boat ramp, two fishing docks and small patches of grass and sand along the side, but nothing near to a sunny coastline.
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Tropical Storm Cindy, the third thus far in 2017, formed in the Gulf off the Louisiana coastline on the same day.
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Tropical Storm CIndy made landfall along the Texas-Louisiana coastline but any significant rainfall is expected to stay well to the east of the Dallas-Fort Worth area.
These example sentences are selected automatically from various online news sources to reflect current usage of the word 'coastline.' Views expressed in the examples do not represent the opinion of Merriam-Webster or its editors. Send us feedback.
First Known Use of coastline
1856
COASTLINE Defined for English Language Learners
coastline
playDefinition of coastline for English Language Learners
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: the land along the edge of a coast
Learn More about coastline
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See words that rhyme with coastline Spanish Central: Translation of coastline Nglish: Translation of coastline for Spanish speakers Britannica English: Translation of coastline for Arabic speakers Britannica.com: Encyclopedia article about coastline
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