| 单词 | scouring bit | 
| 释义 | > as lemmasscouring bit   scouring bit  n. (see quot. 1860). ΚΠ 1860    Eng. & Foreign Mining Gloss. 		(new ed.)	 (Derbyshire Terms) 43  				Scouring bit, a bit attached to the ends of boring rods for the purpose of extracting the rubbish. < as lemmas  | 
	
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