Relating to or located on the coast; near or by the sea. Characteristic of areas where land meets ocean.
From Latin 'costa' meaning 'rib' or 'side,' which came to mean the side of land next to water. The word entered English via Old French 'coste' in the 14th century, with the adjective form 'coastal' appearing much later.
The Latin root 'costa' meaning 'rib' gives us a poetic image - the coastline as the ribs of the land, the skeletal structure where earth meets sea. This anatomical metaphor appears in many languages, reflecting how humans instinctively see landscapes as bodies.
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