Smut /(?)/

1. Foul matter, like soot or coal dust; also, a spot or soil made by such matter.
2. Bad, soft coal, containing much earthy matter, found in the immediate locality of faults. (Mining)
3. An infection 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 Ustilago Carbo, is the commonest kind; that of Indian corn is Ustilago maydis. (Bot.)
4. Obscene language; ribaldry; obscenity.

   He does not stand upon decency . . . but will talk smut, though a priest and his mother be in the room.

imp. & p. p. Smutted; p. pr. & vb. n. Smutting

1. To stain or mark with smut; to blacken with coal, soot, or other dirty substance.
2. To taint with mildew, as grain.
3. To blacken; to sully or taint; to tarnish.
4. To clear of smut; as, to smut grain for the mill.

1. To gather smut; to be converted into smut; to become smutted.
2. To give off smut; to crock.