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
Singers and scribes have waxed poetic for decades about the best beaches in California, in love with the wild coastlines, endless sky, and ever-present sunshine.
—
Katie Kiefner, Vogue, 1 Feb. 2025
The recent rainfall and increased debris from fire zones have prompted Los Angeles County public health officials to issue an advisory and close several miles of coastline from Malibu to Playa del Rey.
—Ruben Vives, Los Angeles Times, 29 Jan. 2025
Unpredictable weather and currents propelled the ships toward the foggy, rocky coastline, and there were few places to shelter from storms.
—Teresa Nowakowski, Smithsonian Magazine, 22 Jan. 2025
The United States’ chunk spans 12 nautical miles from its coastline, according to the National Centers for Environmental Information, a federal agency whose own maps this week still showed the name as the Gulf of Mexico.
—Aidan Bush, Miami Herald, 22 Jan. 2025
See all Example Sentences for coastline 
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Katie Kiefner, Vogue, 1 Feb. 2025
The recent rainfall and increased debris from fire zones have prompted Los Angeles County public health officials to issue an advisory and close several miles of coastline from Malibu to Playa del Rey.
—Ruben Vives, Los Angeles Times, 29 Jan. 2025
Unpredictable weather and currents propelled the ships toward the foggy, rocky coastline, and there were few places to shelter from storms.
—Teresa Nowakowski, Smithsonian Magazine, 22 Jan. 2025
The United States’ chunk spans 12 nautical miles from its coastline, according to the National Centers for Environmental Information, a federal agency whose own maps this week still showed the name as the Gulf of Mexico.
—Aidan Bush, Miami Herald, 22 Jan. 2025
See all Example Sentences for coastline
Dictionary Entries Near coastline
Cite this Entry
“Coastline.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/coastline. Accessed 6 Feb. 2025.
Copy CitationKids Definition
coastline
noun
coast·line
ˈkōst-ˌlīn
: the outline or shape of a coast
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