smut

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smut

(smŭt),
A fungal disease of cereal grains caused by species of Ustilago and characterized by dark brown or black masses of spores on the plants; for example, corn smut (U. maydis); loose smut of wheat (U. nuda)

smut

(1) Obscenity—i.e., lewd language or conversation.
(2) Pornography, see there.

smut

a group of fungal infections of the seedheads of cereals. Infected grain fed to livestock may be poisonous.

barley smut
Ustilago hordei thought to cause infertility and stillbirths.
wheat smut
Tilletia tritici thought to cause glomerulonephritis in pigs.