keelson
/kiːlsən/(亦作kelson)
noun
- a structure running the length of a ship and fastening the timbers or plates of the floor to its keel内龙骨。
词源
Middle English kelswayn, related to Low German kielswīn, from kiel 'keel of a ship' + swīn 'swine' (used as the name of a timber).