| 单词 | tide-flap |
| 释义 | > as lemmastide-flap tide-flap n. a tidal valve opening outwardly at the mouth of a drain or small tidal stream. ΘΚΠ the world > the earth > water > lake > pool > [noun] > artificially confined water > contrivance for impounding water > gate, lock, or sluice > for regulating outflow waste-hatch1705 waste-gate1791 tide-flap1843 waste-sluice1844 1843 Civil Engineer & Architect's Jrnl. 6 426/1 At the end of the main sewer was placed a cast-iron frame, upon which were hung three tide-flaps with brass facings. < as lemmas |
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