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BNC: 37127 COCA: 30886

grindstone

Word family
Related topics: Technology, Tools
grind·stone /ˈɡraɪndstəʊn $ -stoʊn/ noun [countableC]  
TTZa large round stone that turns like a wheel, and is used for making tools and knives sharp when they are rubbed against it 〔用来磨刀具的〕砂轮
keep your nose to the grindstone at nose1(11)
Examples from the Corpus
grind·stone noun
Chinese
Syllable
Corpus
BNC: 37127 COCA: 30886
BNC: 37127 COCA: 30886

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