coal seam
- a bed of coal.
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Origin of coal seam
First recorded in 1840–50
Dictionary.com Unabridged
Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018
Examples from the Web for coal seam
Historical Examples
The mining engineer, Monsieur Arnaud, was of opinion that on sinking deeper into the coal-seam a better quality would be met with.
Cruise of the 'Alert'R. W. Coppinger