Grindstone

//ˈɡɹaɪn(d)ˌstəʊn// noun

Definitions

Noun
  1. 1
    An abrasive wheel for sharpening, polishing, or grinding.
  2. 2
    a revolving stone shaped like a disk; used to grind or sharpen or polish edge tools wordnet
  3. 3
    Synonym of starry flounder.

Etymology

From Middle English grind-ston, grindistan, (also as grindel-ston), equivalent to grind + stone. Cognate with Scots grindstane.

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