1. A carbonaceous material obtained by heating wood or other organic matter in the absence of air
   "They grilled the fish over wood coal";
   - charcoal
    
2. Intermediate between peat and bituminous coal
   "wood coal is sometimes called brown coal due to its colour";
   - lignite, brown coal

Derived forms: wood coals

Type of: atomic number 6, C, carbon, coal, fuel, humate

Part of: black powder