burstone

or buhr·stone, burr·stone

[ bur-stohn ]

noun

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

burstone

/ ˈbɜːˌstəʊn /

noun

1. See buhrstone
   a variant spelling of buhrstone

Word History and Origins

Origin of burstone¹

bur(r) ⁴ + stone

Example Sentences

Rynd, rind, n. in a burstone mill, the iron which supports the upper stone.

From Project Gutenberg

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

From Project Gutenberg