ayr stone

[air]

noun

a fine-grained stone used for polishing marble and as a whetstone.

Origin of ayr stone

First recorded in 1855–60; named after Ayr

Also called snakestone.

Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018

Examples from the Web for ayr stone

Historical Examples of ayr stone

The section is then finished with, say, two minutes emery or water of Ayr-stone dust.
On Laboratory Arts
Richard Threlfall