'Millstone' in the Bible

Then a powerful angel picked up a stone that was like a large millstone and threw it into the sea, saying, "The great city Babylon will be thrown down violently and will never be found again.

The sound of harpists, musicians, flutists, and trumpeters will never be heard within you again. No artisan of any trade will ever be found within you again. The sound of a millstone will never be heard within you again.