Synonyms/Hypernyms (Ordered by Estimated Frequency) of noun grindstone

1 sense of grindstone

Sense 1
grindstone -- (a revolving stone shaped like a disk; used to grind or sharpen or polish edge tools)
       => stone -- (building material consisting of a piece of rock hewn in a definite shape for a special purpose; "he wanted a special stone to mark the site")
       => sharpener -- (any implement that is used to make something (an edge or a point) sharper; "a knife sharpener")