Definitions

from The American Heritage® Dictionary of the English Language, 5th Edition.

  • noun A landmark visible from the sea, used as a guide in navigation.

from The Century Dictionary.

  • noun Any elevated object on land which serves for a direction to mariners in entering a harbor, or in sailing along or approaching a coast; a beacon, as a light-house, a mountain, etc.

from the GNU version of the Collaborative International Dictionary of English.

  • noun Any elevated object on land which serves as a guide to mariners; a beacon; a landmark visible from the sea, as a hill, a tree, a steeple, or the like.

from Wiktionary, Creative Commons Attribution/Share-Alike License.

  • noun Any elevated object on land which serves as a guide to mariners, such as a hill or steeple.
  • noun A beacon, buoy, etc. placed in the sea to aid navigation.

Etymologies

from Wiktionary, Creative Commons Attribution/Share-Alike License

sea +‎ mark. Compare landmark.

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Examples

  • Onward they sailed along the south bank of the estuary, past the great sea-carved stone arches of “Île Percée” that made it an important seamark.

    Champlain's Dream David Hackett Fischer 2008

  • Onward they sailed along the south bank of the estuary, past the great sea-carved stone arches of “Île Percée” that made it an important seamark.

    Champlain's Dream David Hackett Fischer 2008

  • The men came back saying they'd set up a seamark, but there was no place for a port.

    The Persian Boy Renault, Mary 1972

  • The ruins of the Cistercian Church which once graced this shore and raised above the trees its lighthouse tower, a seamark by day and a beacon by night, are among the loveliest in Wessex.

    Wanderings in Wessex An Exploration of the Southern Realm from Itchen to Otter Edric Holmes

  • Where lies your landmark, seamark, or soul’s star?

    On the Portrait of Two Beautiful Young People 1918

  • He rubbed his glass, and called some other officers to verify the absence of the ancient seamark, but all they could make out was a white cloud, that might be smoke or dust or mist hanging over the town.

    The Nebuly Coat John Meade Falkner 1895

  • It was not for many months afterwards that Lieutenant Ennefer heard of the catastrophe, and when he came up Channel again on his return four years later, there was the old seamark clear once more, whiter a little, but still the same old tower.

    The Nebuly Coat John Meade Falkner 1895

  • The sound of the strokes recalled his mind for the moment to those early days, when the ambition for a seat in Parliament had been the very seamark of his utmost sail.

    The Dictator Justin McCarthy 1871

  • Where lies your landmark, seamark, or soul's star?

    Poems of Gerard Manley Hopkins Now First Published Gerard Manley Hopkins 1866

  • Then falling into a moment’s revery, he again looked up towards the sun and murmured to himself: “Thou seamark! thou high and mighty Pilot! thou tellest me truly where I am — but canst thou cast the least hint where I shall be?

    Moby Dick; or the Whale 2002

Comments

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  • Historically sailors would hark

    To foghorns that blast in the dark,

    But these days they heed

    The GPS feed

    And don’t even need a seamark.

    August 13, 2018