- The definition of a buhr is a hard rock used to make millstones, or a millstone that has been cut from these types of rocks.
An example of a buhr is a piece of limestone with cavities that originally held shell fossils.
Variant of buhrstone
- a hard, siliceous rock used to make millstones
- a millstone cut from such a rock
Origin of buhrstonebuhr, variant, variety of burr + stone