coastline
UK: ˈkəʊstlaɪn | US: ˈkoʊstlaɪn
n. the outline or boundary where land meets the sea or a large body of water
n. the land along such a boundary
The word "coastline" combines "coast" (from Old French "coste," meaning "rib" or "side," later evolving to "shore" in English) and "line" (from Latin "linea," meaning "string" or "boundary"). The fusion reflects the concept of a clear demarcation where land and water meet. Over time, "coast" narrowed to specifically denote oceanic shores, while "line" emphasized the geometric or visible edge, creating a vivid image of the land's contour against the sea.
The rugged coastline of Cornwall attracts many hikers.
Satellite images help scientists monitor changes in the coastline.
Erosion has significantly altered the coastline over the past decade.
The country’s coastline stretches for thousands of miles.
They built a lighthouse to guide ships along the dangerous coastline.