burstone

American

[bur-stohn] / ˈbɜrˌstoʊn /

Or buhrstone,

noun

any of various siliceous rocks used for millstones.
a millstone of such material.

burstone British

/ ˈbɜːˌstəʊn /

noun

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

Etymology

Origin of burstone

bur(r) ⁴ + stone

Example Sentences

Examples are provided to illustrate real-world usage of words in context. Any opinions expressed do not reflect the views of Dictionary.com.

With the march of improvement, burstone mills went into the discard.

From All About Coffee by Ukers, William H. (William Harrison)

For manufacturing purposes, burstone mills were for many years exclusively employed, especially one first known as the Prentiss & Page, and later as the Page mill.

From All About Coffee by Ukers, William H. (William Harrison)

Definitions and idiom definitions from Dictionary.com Unabridged, based on the Random House Unabridged Dictionary, © Random House, Inc. 2023