coastline

[ kohst-lahyn ]
/ ˈkoʊstˌlaɪn /

noun

the outline or contour of a coast; shoreline.
the land and water lying adjacent to a shoreline.

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Origin of coastline

First recorded in 1855–60; coast + line1
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2021

Example sentences from the Web for coastline

British Dictionary definitions for coastline

coastline
/ (ˈkəʊstˌlaɪn) /

noun

the outline of a coast, esp when seen from the sea, or the land adjacent to it
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012