Outrageously Funny Word Dictionary :: Knockstone

👉 In geology, a "knockstone" is a flat or irregularly shaped boulder with a smooth surface that has been eroded and weathered over time. These rocks are often found in areas where there is little rainfall, such as near rivers or lakes, and they can be found in various sizes and shapes. Knockstones can also be found on the sides of roads or other structures, especially if they have been washed away by water.

knockstone