Grindstone (disambiguation)

• Grindstone is a tool used for sharpening

Grindstone may also refer to:

• A type of millstone used to grind grains such as wheat
• Grindstone (horse), 1996 Kentucky Derby winner and sire of the racehorse Birdstone
• Grindstone (album), 2007 album by the Norwegian band Shining
• Grindstone (time tracking software), a program that allows users to create and organize tasks and to track time
• Grindstone 100 Miler, a 100 mile long ultramarathon in Virginia

Places:

• Grindstone Island (Magdalen Islands), an island in the Magdalen Islands, Quebec, Canada
• Grindstone Island (Ontario), is an island in Big Rideau Lake, Ontario, Canada.
• Grindstone Island, is one of the Thousand Islands, in the St. Lawrence River in the United States of America.
• Grindstone Island, an island on Shepody Bay, New Brunswick, Canada.

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