n. A black, porous, carbonaceous material, 85 to 98 percent carbon, produced by the destructive distillation of wood and used as a fuel, filter, and absorbent.n. A drawing pencil or crayon made from this material.n. A drawing executed with such a pencil or crayon.n. A dark grayish brown to black or dark purplish gray.v. To draw, write, or blacken with a black, carbonaceous material.v. To charbroil.