| 单词 | guard-lock |
| 释义 | > as lemmasguard-lock guard-lock n. (see quots.). ΘΚΠ the world > the earth > water > lake > pool > [noun] > artificially confined water > contrivance for impounding water > gate, lock, or sluice hatchOE clowa1250 lock1261 water lock1261 sluice1340 water gate1390 sewer-gate1402 spay1415 floodgatec1440 shuttlec1440 spayer1450 gate1496 falling gate1524 spoye1528 gote1531 penstock1542 ventil1570 drawgate1587 flood-hatch1587 turnpike1623 slaker1664 lock gate1677 hatchway1705 flash1768 turnpike-lock1771 sluice-gate1781 pound-lock1783 stop-gate1790 buck gate1791 slacker1797 aboiteau1802 koker1814 guard-lock1815 falling sluice1819 lasher1840 fender1847 tailgate1875 weir-hatch1875 wicket1875 1815 Niles' Weekly Reg. 9 44/2 The boat, having entered the guard lock, went through the new canal. 1821 T. Dwight Trav. II. 353 [The canal] contains nine locks. The first, after the guard-lock, has a descent of six feet. 1840 H. S. Tanner Canals & Rail Roads U.S. 250 Guard lock, in canalling, is employed in maintaining the level of a canal, by preventing the encroachment of water from rivers, lakes, &c., when elevated beyond the prescribed level. 1875 E. H. Knight Pract. Dict. Mech. Guard-lock (Hydraulic Engineering), a tide-lock, forming a communication between a basin and tide-water. < as lemmas |
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