a particle of soot; sooty matter.

a black or dirty mark; smudge.

indecent language or publications; obscenity.

Plant Pathology .

a disease of plants, esp. cereal grasses, characterized by the conversion of affected parts into black, powdery masses of spores, caused by fungi of the order Ustilaginales.

a fungus causing this disease.

to soil or smudge.

to become affected with smut, as a plant.

noun

adult material , adult movie , bawdiness , dirt , dirty movie , erotica , filth , girlie magazine , hard-core pornography , indecency , indecent material , obscene materials , obscenity , porn , porno , porno film , sexploitation , sexually explicit material , skin flick , smut , soft-core pornography , stag film , x-rated material , x-rated movie , bawdry , profanity , ribaldry , scatology , vulgarity , blight , grime , lewdness , mildew , muck , pornography , scot , smudge , smutch , soil , spot , stain , sully , taint

verb

bestain , discolor , befoul , besmear , besmirch , bespatter , cloud , denigrate , dirty , smear , smudge , soil , spatter , stain , sully , taint , tarnish