Definition of "Smut" :

noun: creative activity (writing or pictures or films etc.) of no literary or artistic value other than to stimulate sexual desire

noun: an offensive or indecent word or phrase

noun: any fungus of the order Ustilaginales

noun: destructive diseases of plants (especially cereal grasses) caused by fungi that produce black powdery masses of spores

noun: a black colloidal substance consisting wholly or principally of amorphous carbon and used to make pigments and ink

verb: affect with smut or mildew, as of a crop such as corn

verb: become affected with smut

"The corn smutted and could not be eaten."

verb: stain with a dirty substance, such as soot

verb: make obscene

"This line in the play smuts the entire act."