(uncountable) Soot. / (countable) A flake of ash or soot. / (uncountable) Sexually vulgar material; something that is sexual in a dirty way; pornographic material.

(transitive, intransitive) To stain (or be stained) with soot or other dirt. / (transitive) To taint (grain, etc.) with the smut fungus. / (intransitive) To become tainted by the smut fungus.

simple past tense and past participle of smut

plural of smut

present participle of smut

(historical) The inferior chaff from corn milling.

A fungus that affects corn (maize), taxonomic name Ustilago maydis, which induces tumors in the plant, known to be eaten as a delicacy.

plural of smut-ball

A fungus of the genus Tilletia; a puffball.

A disease of the seedlings of the onion caused by the fungus Urocystis cepulae which causes black elongate blisters on the bulb and leaves of the plant. / The fungus Urocystis cepulae.