onion smut (English, noun)
expansion: onion smut (uncountable)
Senses:
glosses: 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.
tags: uncountable
glosses: The fungus Urocystis cepulae.
tags: uncountable
Forms: