| 单词 | lock sill |
| 释义 | > as lemmaslock sill lock sill n. a horizontal timber or masonry structure at the base of the entrance to a canal or river lock, against which the gates close. ΚΠ 1806 Monthly Mag. June 516/2 The works now going on are, the deepening the entrances next the river to the level of the lock sills, being six feet below low water mark. 1891 R. Routledge Discov. & Inventions 19th Cent. (ed. 8) 194 These gates will shut from the outside against the lock sills. 2009 Yukon News (Nexis) 4 Nov. 8 Our ship was to lock out into the harbour proper by 1 p.m. to catch sufficient water depth on the lock sill. < as lemmas |
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