A horizontal timber (or structure) at the bottom of the entrance to a dock or canal-lock, against which the gates close.
| 单词 | θ2748 |
| 释义 | the world > the earth > water > body of water > channel of water > [noun] > navigable waterway > canal > lock or chamber > structure against which gates close (1) sill1789 A horizontal timber (or structure) at the bottom of the entrance to a dock or canal-lock, against which the gates close. |
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