ballast fin
noun
A metal fin attached to the keel of a yacht, serving to ballast her and to enable her to sail closer to the wind.
Origin
Late 19th century; earliest use found in Outing: an illustrated monthly magazine of recreation.
| 单词 | ballast fin |
| 释义 | ballast finnoun A metal fin attached to the keel of a yacht, serving to ballast her and to enable her to sail closer to the wind. Origin |
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