grindstone

/ˈɡɹaɪn(d)ˌstəʊn/

Etymology

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

grindstone means an abrasive wheel for sharpening, polishing, or grinding. Lexicurio rates it Rare gem — a strength score of 72 out of 100.

grindstone is pronounced /ˈɡɹaɪn(d)ˌstəʊn/.

noun