seaboard—the part of a country which borders on the sea; the coastline:
- Come winter, Tundra Swans are to be found along the seaboard of the western (and to a lesser extent the eastern) United States.
surf board—a narrow buoyant board used in surfing in which the surfer is carried along the face of a breaking wave:
- When you’re still, it’s nearly impossible to stand on the surf board.