(v. i.) To gather smut; to be converted into smut; to become smutted.
(v. i.) To give off smut; to crock.
(v. t.) 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.
(v. t.) Bad, soft coal, containing much earthy matter, found in the immediate locality of faults.
(v. t.) Foul matter, like soot or coal dust; also, a spot or soil made by such matter.
(v. t.) Obscene language; ribaldry; obscenity.
(v. t.) To blacken; to sully or taint; to tarnish.
(v. t.) To clear of smut; as, to smut grain for the mill.
(v. t.) To stain or mark with smut; to blacken with coal, soot, or other dirty substance.
(v. t.) To taint with mildew, as grain.