seaboard /ˈsiːˌbɔːd/

• 1. 

  N-COUNT The seaboard is the part of a country that is next to the sea; used especially of the east coast of North America. (尤指北美东海岸的)沿海地区 [usu 'the' N in sing]

  例：

  ...the Eastern seaboard of the U.S.

  ...美国东部沿海地区。