WordReference Random House Unabridged Dictionary of American English © 2026
chest′nut coal′,
- Mininganthracite in sizes ranging from 13⁄16 to 15⁄8 in. (3 to 4 cm). Also called nut coal.
- 1805–15, American.
'chestnut coal' also found in these entries (note: many are not synonyms or translations):