The amount of rise or fall undergone by a vessel passing through a lock or series of locks on a canal or river.
| 单词 | θ2747 |
| 释义 | the world > the earth > water > body of water > channel of water > [noun] > navigable waterway > canal > lock or chamber > rise or fall effected by locks (1) lockage1766 The amount of rise or fall undergone by a vessel passing through a lock or series of locks on a canal or river. |
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