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▪ I. † unˈwater, n. Obs.—0
(un-1 12 b. Cf. unwatered ppl. a. 1 b.)
1611Cotgr., Camelot plenier, vnwater Chamlet.
▪ II. unˈwater, v.
[un-2 4.]
trans. To drain of water, to carry off water from; spec. in Mining (see b).
The word occurs as a mistranslation in: a 1300 E.E. Psalter lxxvii. 23 (E., H.), He smot þe stane, and watres outran, And scaldand unwatred [L. inundaverunt] þai ilkan.
a.1642C. Vermuyden Disc. Fennes 5 By these Out-falls the said Rivers and Lands unwater themselves. 1872W. F. Butler Gt. Lone Land iv. (1875) 60 The St. Croix [river] unwatering the great tract of pine land. 1880Haughton Phys. Geogr. x. 192 The rivers of China unwater the whole eastern slope of the table-land.
b.1769Smeaton in Glynn Treat. Power Water (1853) 99 The first complete engine..at work..for draining or un⁓watering a lead mine. 1778Pryce Min. Cornub. 146 Many more valuable Lodes have been discovered, than those they were driving to unwater. 1865J. T. F. Turner Slate Quarries 22 The pits are unwatered by one engine pump. 1883Encycl. Brit. XVI. 458/1 Siphons have been used for unwatering workings in special cases.
Hence unˈwatering vbl. n.
1778Pryce Min. Cornub. 152 The innumerable Adits..are of some importance to the unwatering of the Mines. 1909R. H. Richards Text-bk. Ore Dressing xv. 452 Unwatering devices are used to diminish the water carried by sand, or the sand carried by water. 1935Economist 21 Dec. 1283/2 Their consulting engineer on the spot estimated that the unwatering of the old mine should commence about the beginning of February. 1976Northern Miner (Toronto) 19 Aug. 13/3 Stage 1 included..unwatering, sampling and surface and underground drilling. |