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