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chestnut coal

American  

noun

  1. anthracite coal in sizes ranging from 1 3/16 to 1 5/8 inches (3 to 4 centimeters).

Etymology

Origin of chestnut coal

An Americanism dating back to 1805–15

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.