[see-bawrd, -bohrd]


the line where land and sea meet.
a region bordering a seacoast: the Eastern seaboard.


bordering on or adjoining the sea.

Origin of seaboard

1350–1400 for earlier sense “porthole cover”; 1480–90 in phrases at, on, to seaboard on the seaward side; 1815–25 for def 1; Middle English seebord. See sea, starboard
Related formsin·ter·sea·board, adjective Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019

Examples from the Web for seaboard

Contemporary Examples of seaboard

  • In the years before the American Revolution, few colonists on the Atlantic seaboard joined militias or even knew how to use arms.

    The Daily Beast logo
    The Militarization of America

    William R. Polk

    December 5, 2009

  • Tens of thousands line up to pay their respects as Hurricane Danny moves slowly up the Atlantic seaboard and darkens the sky.

    The Daily Beast logo
    My Martha's Vineyard Close Encounter

    Patricia J. Williams

    August 29, 2009

Historical Examples of seaboard

  • Down here on the seaboard I think most people do appreciate it.

  • After this achievement he advanced from the seaboard and encamped in Leuctra on Thespian territory.



  • He is the war-lord who sends his battalions of Atlantic rollers to the assault of our seaboard.

  • It is more American, but less cosmopolitan than the seaboard.

    The Frontier in American History

    Frederick Jackson Turner

  • White apparitions were seen on the Atlantic seaboard near Savannah.

    The White Invaders

    Raymond King Cummings

British Dictionary definitions for seaboard



  1. land bordering on the sea; the seashore
  2. (as modifier)seaboard towns
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012

Word Origin and History for seaboard

"seaward side of a ship," late 15c., from sea + board (n.2).

Online Etymology Dictionary, © 2010 Douglas Harper