Keelson meaning

kĕl-
A timber or girder fastened above and parallel to the keel of a ship or boat for additional strength.
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A longitudinal beam or set of timbers or metal plates fastened inside the hull of a ship along the keel to add structural strength.
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(nautical) A longitudinal beam fastened on top of the keel of a vessel for strength and stiffness.
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Origin of keelson

  • Alteration (influenced by keel) of Middle English kelswin probably from Old Norse kjölsvīn kjölr keel svīn swine, timber sū- in Indo-European roots

    From American Heritage Dictionary of the English Language, 5th Edition

  • First attested from 1611. Compare with Dutch kolzwijn, kolsem, Low German, kielswîn, German Kielschwein, Danish kølsvin, kölsvin, all with the same meaning. First part is keel while the second part is uncertain; possibly sill.

    From Wiktionary