| 单词 | drop keel |
| 释义 | drop keel (extremely rare) n WORD FAMILY drop keel n a retractable fin keel used on sailboats to prevent drifting to leeward Syn|Hypo|Hyper centerboard, centreboard, sliding keel daggerboard a removable centerboard on a small sailboat that can be lowered into the water to serve as a keel fin keel a metal plate projecting from the keel of a shallow vessel to give it greater lateral stability |
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