A disease of the seedlings of the onion caused by the fungus Urocystis cepulae which causes black elongate blisters on the bulb and leaves of the plant. / The fungus Urocystis cepulae.

A fungal disease of barley caused by Ustilago avenae.

The state or quality of being smutty.

Soiled with smut; blackened, dirty. / Obscene, indecent. / Affected with the smut fungus.

(transitive) To make dirty; to soil.

To soil, stain or smudge. / To eat noisily, as with one's mouth open.

A stain, smudge or blot.

superlative form of smutty: most smutty

comparative form of smutty: more smutty

In a smutty way.