stain with a dirty substance, such as soot
a black colloidal substance consisting wholly or principally of amorphous carbon and used to make pigments and ink
creative activity (writing or pictures or films etc.) of no literary or artistic value other than to stimulate sexual desire
destructive diseases of plants (especially cereal grasses) caused by fungi that produce black powdery masses of spores
any fungus of the order Ustilaginales
