smut

American Heritage® Dictionary of the English Language, Fourth Edition

1. n. A particle of dirt.
2. n. A smudge made by soot, smoke, or dirt.
3. n. Obscenity in speech or writing.
4. n. Pornography.
5. n. Any of various plant diseases, especially of cereal grasses, caused by parasitic fungi of the order Ustilaginales that form black powdery masses of spores on the affected parts.
6. n. A fungus causing such a disease.
7. v. To blacken or smudge, as with smoke or grime.
8. v. To affect (a plant) with smut.
9. v. To free (grain, for example) from smut.
10. v. To make obscene.
11. v. To emit smut.
12. v. To be or become blackened or smudged.
13. v. To become affected with smut, as a plant.

Century Dictionary and Cyclopedia

1. n. A spot made with soot, coal, or the like; also, the fouling matter itself.
2. n. Obscene or filthy language.
3. n. A fungous disease of plants, affecting especially the cereal plants, to many of which it is exceedingly destructive. It is caused by fungi of the family Ustilagineæ. There are in the United States two well-defined kinds of smut in cereals: the black smut, produced by Ustilago segetum, in which the head is mostly changed to a black dust;
4. n. Earthy, worthless coal, such as is often found at the outcrop of a seam. In Pennsylvania also called black-dirt, blossom, and crop.
5. To stain or mark with smut; blacken with coal, soot, or other dirty substance.
6. To affect with the disease called smut; mildew.
7. Figuratively, to tarnish; defile; make impure; blacken.
8. To make obscene.
9. To gather smut; be converted into smut.
10. To give off smut; crock.
11. In leather manufacturing, to go over (the blacked side of a hide or skin) with a woolen cloth to remove dirt and improve the appearance of the blacking.

Wiktionary

1. n. uncountable Soot.
2. n. uncountable Sexually vulgar material; something that is sexual in a dirty way; pornographic material.
3. n. derogatory A promiscuous, classless woman.
4. n. Any of a range of fungi, mostly Ustilaginomycetes, that cause plant disease in grasses, including cereal crops; the disease so caused.
5. v. To stain (or be stained) with soot etc.
6. v. intransitive To gather smut; to be converted into smut; to become smutted.

GNU Webster's 1913

1. n. Foul matter, like soot or coal dust; also, a spot or soil made by such matter.
2. n. (Mining) Bad, soft coal, containing much earthy matter, found in the immediate locality of faults.
3. n. (Bot.) An affection of cereal grains producing a swelling which is at length resolved into a powdery sooty mass. It is caused by parasitic fungi of the genus Ustilago. Ustilago segetum, or U. Carbo, is the commonest kind; that of Indian corn is Ustilago maydis.
4. n. Obscene language; ribaldry; obscenity.
5. v. To stain or mark with smut; to blacken with coal, soot, or other dirty substance.
6. v. To taint with mildew, as grain.
7. v. To blacken; to sully or taint; to tarnish.
8. v. To clear of smut.
9. v. To gather smut; to be converted into smut; to become smutted.
10. v. To give off smut; to crock.

WordNet 3.0

1. n. an offensive or indecent word or phrase
2. n. any fungus of the order Ustilaginales
3. n. creative activity (writing or pictures or films etc.) of no literary or artistic value other than to stimulate sexual desire
4. n. a black colloidal substance consisting wholly or principally of amorphous carbon and used to make pigments and ink
5. v. become affected with smut
6. v. affect with smut or mildew, as of a crop such as corn
7. n. destructive diseases of plants (especially cereal grasses) caused by fungi that produce black powdery masses of spores
8. v. make obscene
9. v. stain with a dirty substance, such as soot