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Etymology edit

From earlier sea-bord, perhaps continuing (with change in meaning) Middle English see bord (porthole cover, seaward side), equivalent to sea +‎ board.

Pronunciation edit

  • (file)

Noun edit

seaboard (plural seaboards)

  1. The area bordering the sea; a coastline; a sealine.
    • 1948, Carey McWilliams, North from Mexico / The Spanish-Speaking People of The United States, J. B. Lippincott Company, page 25:
      While De Anza was exploring the Bay of San Francisco, seeking a site for the presidio, the American colonists on the eastern seaboard, three thousand miles away, were celebrating the signing of the Declaration of Independence.
    • 1951 October, “Preventing Rail Corrosion”, in Railway Magazine, page 648:
      Recently the Great Northern Railway, U,S.A., which has a considerable mileage of line bordering the Pacific seaboard, has put in service mobile equipment for applying anti-corrosion treatment to rails.

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