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单词 sludger
释义

sludgern.

/ˈslʌdʒə/
Etymology: < sludge v.
An appliance for removing the sludge from a bore-hole, or for boring in quicksand.
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society > occupation and work > equipment > earth-moving and excavating equipment > [noun] > other equipment
snow-plough1792
road roller1820
horse-block1825
sludger1839
horsing-block1856
channeller1867
grader1869
push plough1890
snowblade1947
ripper1953
mouldboard1956
groomer1966
1839 A. Ure Dict. Arts 966 The sludger, for bringing up the mud.
1849 G. C. Greenwell Gloss. Terms Coal Trade Northumberland & Durham 9 Sludgers..are used when a bore-hole is so wet that the borings would..be washed out of the cylinder.
1871 W. Morgans Man. Mining Tools 134 A sludger which is fitted with an inside piston..in order to suck the sludge into the cylinder.
This entry has not yet been fully updated (first published 1912; most recently modified version published online December 2020).
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n.1839
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