mother of coal
Origin of mother of coal
First recorded in 1865–70
Dictionary.com Unabridged
Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018
Examples from the Web for mother of coal
Historical Examples of mother of coal
There was no parting except two inches of mother-of-coal—midway, which would make it but easier to mine.
The Trail of the Lonesome PineJohn Fox, Jr.