Definition
burstone
noun
- a hard, porous stone used for grinding grain in a mill; a millstone
Usage: also spelled buhrstone; chiefly historical
Examples
- The miller replaced the worn burstone with a new one to improve the grinding quality.
- Burstone was quarried in France and exported to mills across Europe.
- The upper and lower burstones worked together to crush the grain into flour.
- Damage to the burstone surface could affect the texture of the milled grain.