2. (Fine Arts) Finely prepared charcoal in small sticks, used
as a drawing implement.
{Animal charcoal}, a fine charcoal prepared by calcining
bones in a closed vessel; -- used as a filtering agent in
sugar refining, and as an absorbent and disinfectant.
{Charcoal blacks}, the black pigment, consisting of burnt
ivory, bone, cock, peach stones, and other substances.
{Charcoal drawing} (Fine Arts), a drawing made with charcoal.
See {Charcoal}, 2. Until within a few years this material
has been used almost exclusively for preliminary outline,
etc., but at present many finished drawings are made with
it.
{Charcoal point}, a carbon pencil prepared for use in an
electric light apparatus.
{Mineral charcoal}, a term applied to silky fibrous layers of
charcoal, interlaminated in beds of ordinary bituminous
coal; -- known to miners as mother of coal.