coastline

coast +‎ line

coastline (countable and uncountable, plural coastlines)

1. The shape, outline, or boundary of a coast.
   • 1922 February, James Joyce, “[[Episode 12]]”, in Ulysses, Paris: Shakespeare & Co.; Sylvia Beach, OCLC 560090630; republished London: Published for the Egoist Press, London by John Rodker, Paris, October 1922, OCLC 2297483:

     Tarbarrels and bonfires were lighted along the coastline of the four seas on the summits of the Hill of Howth, Three Rock Mountain, Sugarloaf, Bray Head, the mountains of Mourne, the Galtees, the Ox and Donegal and Sperrin peaks, the Nagles and the Bograghs, the Connemara hills, the reeks of M’Gillicuddy, Slieve Aughty, Slieve Bernagh and Slieve Bloom.

• asolectin, laces into, sectional