or buhr·stone, burr·stone
- any of various siliceous rocks used for millstones.
- a millstone of such material.
Origin of burstone
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018
Examples from the Web for burstone
With the march of improvement, burstone mills went into the discard.All About Coffee
William H. Ukers
Rynd, rind, n. in a burstone mill, the iron which supports the upper stone.
- a variant spelling of buhrstone
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012