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ayr stone

American  
[air] / ɛər /

noun

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

Etymology

Origin of ayr stone

First recorded in 1855–60; named after Ayr

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

Idioms from The American Heritage® Idioms Dictionary copyright © 2002, 2001, 1995 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company.