GRINDSTONE


Meaning of GRINDSTONE in English

grind ‧ stone /ˈɡraɪndstəʊn $ -stoʊn/ BrE AmE noun [countable]

a large round stone that turns like a wheel, and is used for making tools and knives sharp when they are rubbed against it

⇨ keep your nose to the grindstone at ↑ nose 1 (11)

Longman Dictionary of Contemporary English.      Longman - Словарь современного английского языка.