Coast is an English word name, the "coast" or shoreline, from the Latin costa, "rib" or "side", which came to mean the edge of the land by the sea. It belongs to the newest wave of nature and place words that American parents have turned into first names, in line with Ocean, River and Reef. Coast was a rarity a decade ago at number 8905 in 2015 and entered the US top 1000 for the first time in 2025, at number 875.