单词 | keelson |
释义 | keel·son ![]() n. Nautical A timber or girder fastened above and parallel to the keel of a ship or boat for additional strength. [Alteration (influenced by KEEL1) of Middle English kelswin, probably from Old Norse *kjölsvīn : kjölr, keel + svīn, swine, timber; see sū- in the Appendix of Indo-European roots.] |
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