burstone

or buhr·stone, burr·stone

[ bur-stohn ]

/ ˈbɜrˌstoʊn /

noun

any of various siliceous rocks used for millstones.

a millstone of such material.

Nearby words

burst with,
burster,
bursting,
bursting point,
bursting strength,
burt,
burthen,
burton,
burton upon trent,
burton, harold hitz

Origin of burstone

bur(r)⁴ + stone

Also called buhr, burr.

Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019

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.
Chambers's Twentieth Century Dictionary (part 3 of 4: N-R)|Various

British Dictionary definitions for burstone

burstone

/ (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