coastline

US /ˈkoʊst.laɪn/
UK /ˈkoʊst.laɪn/
"coastline" picture
1.

the outline of a coast, especially with regard to its shape and appearance

:
•
The rugged coastline of California is famous for its scenic beauty.
•
We walked along the sandy coastline at sunset.
:
shorelineseaboardcoastlittoral